Context: Another slap hit his face ( this time the opposite cheek to avoid bruising ) and he let out a choked sob . " I said do n't fucking talk to me like that . " Riku growled threateningly , shoving his fingers in and out of him faster . He took care in not hitting his prostate because he knew deep down Yura was enjoying every fucking minute of it .

Question: Where are the fingers sliding in and out of ?
Options:
0. A man 's butt
1. None of the above choices .
2. a woman 's vagina
3. a man 's mouth
Answer: 0