You will be given a definition of a task first, then some input of the task.
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".

[header] How to deal with jet lag [title] Carry your medications with you. [step] If you're on an antidepressant, make sure to put them in your carry-on luggage to take with you. Also, make sure you have enough medication to last the whole trip. <sep> (A) If you're going to need more than you have, talk to your doctor about getting an extension on your prescription. [title] Get the amount of sleep you need. (B) If you think you'll have a bowel movement in the plane, keep your medications on hand. [substeps] Make sure you pack a high dosage of anti-diarrheal medication. (C) Additionally, bring any prescription birth control pills, emergency blockers, and any medical or physician required medications. [title] Bring contact information for medical personnel who may be outside of the area. (D) [substeps] Drugs like amitriptyline and terbinafine are both mood boosters, so make sure to have them on hand during travel. If you're on a prescription medication, follow it's dosage recommendations closely.
Output:
A