Detailed Instructions: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Q: [header] How to make sex last longer [title] Relax and encourage yourself. [step] Anxiety and self-doubt are major mood killers, so try to be optimistic. Approaching sex with confidence, self respect, and a positive attitude can make all the difference for both you and your partner. <sep> (A) [substeps] Don't let fear, anxieties or anxiety affect your pleasure as a result of casual sex. On the contrary, fear is a natural response to having sex. (B) Try to remind yourself what positive effects your body or feelings will have before sex is over. It's okay to feel nervous for the first time, and that's okay--it's better to keep a positive attitude now than to be scared a few days after your period starts. (C) [substeps] Instead of dwelling on negative thoughts about your performance, think to yourself, " sam, finishing fast is common and you shouldn't get down on yourself. You can deal with this! " referring to yourself by name can be more effective when practicing positive self-talk. (D) It's not usually good to postpone sex for longer. Find some space to shut off your internal energy and take in the world around you.
A:
C