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 stop sucking your thumb (older kids ) [title] Have the willpower to know you want to stop and think of a reason, like getting embarrassed at sleepovers. [step] Something along those lines should help. [title] Prepare yourself. <sep> (A) [step] Arrive at school a little early for your first class. If you aren't in class, bring your school planner or anything you possibly can. (B) [step] Rather than also sucking your thumb, remind yourself that doing that is awesome and rewarding. [title] Don't suck on your thumb. (C) [step] Go to sleep at a reasonable time. If the 90 second wake up gives you the urge to suck, your brain knows to wait 24/7. (D) [step] You probably won't sleep too well while trying to stop because you always sleep with your thumb in your mouth. This may make your mouth dry so keep a drink by your bed.
A:
D