The first to cum is punished

Carson returned to his estate on a Saturday afternoon after doing some shopping. After putting the groceries away he made his way to the dungeon with smile on his face. He found his girls as he had instructed them to be by the time he returned. Kneeling naked with collars around their necks and hands on their heads. His smile broadened when he noticed that Kennedy had taken the liberty of gagging herself and her two sisters with brightly colored ball gags. Each matching her collar, Josslyn's in red, Ellie's yellow, and Kennedy's own in pink. He walked over and loosened their gags. Knowing what was expected each girl used her tongue to push the gag out of her mouth leaving it hanging around her neck.

"Ready to have some fun girls?" he asked as he stood in front of them.

"Yes Master," the three answered together.

"Josslyn, on your back, legs spread."

"Yes Master," Josslyn said with a smile as she laid down.

"Ellie, get your face in your sister's pussy, ass in the air."

"Yes Master," Ellie said as she quickly got into the desired position.

"Kennedy, kneel over Josslyn's face, facing Ellie."

"Yes Master." as Kennedy took her place Carson retrieved a Hitatchi wand and held it against Ellie's pussy. Ellie smiled in anticipation of her master turning the wonderful toy on.

"Here's what's going to happen ladies," Carson said with a smile. "Josslyn, your going to eat Kennedy, Ellie your going to eat Josslyn, and I am going to vibe you, Understand?"

"Yes Master," they all answered.

"Good. No one has permission to cum so don't bother asking. The first of you three will be punished and the other two will play a roll in her sister's punishment. Begin!" Carson turned the vibrator on a relatively low setting. One of his slaves would be punished, but, he wanted the competition to be fair.

Within minutes, the dungeon was filled with the wonderful sounds of the sisters' loud moans of pleasure. Carson smiled as he watched them respond to the pleasure they felt. Ellie moved her hips grinding her pussy against the vibrator. Josslyn bucked her hips trying to get more friction, and for Ellie's tongue to go deeper into her pussy. Kennedy's thighs quivered as she struggled to not clamp her thighs too tightly around Josslyn's head.

"Remember, whoever cums first gets punished," Carson said with a laugh.

Who gets punished? Answer in comments.

A) Kennedy

B) Josslyn

C) Ellie