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".
Input: [header] How to relieve varicose vein pain [title] Wear compression stockings. [step] You can find compression stockings at most medical stores and pharmacies. They squeeze your legs, helping increase the blood flow. <sep> (A) They are also very flexible, helping the swelling to go away and preventing the vein from becoming too sore. Opt for lightweight and loose compression stockings over thin, weightless ones. (B) If you are feeling it at all, you can wear them all the time. [substeps] If you can't wear compression stockings, you can wear some sort of knee tube that falls over your leg. (C) They also can help reduce swelling and cushion the pain. [substeps] Compression stockings allow you to cut or lift your thigh, forming a tighter bandage around the protruding half of your leg. (D) In turn, that helps relieve varicose veins over time, which cuts down on the pain. [substeps] Talk to your doctor before using compression stockings.
Output:
D