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". 

Ex Input:
[header] How to lance and drain a blister [title] Assess the blister before choosing to drain it. [step] Not every blister needs to be lanced. In fact, some experts recommend that you should only drain blisters that are exceedingly painful, in weight-bearing or high-contact areas, or larger than 0.8 inches (2 centimeters) in diameter. <sep> (A) [substeps] If the blister is intact and manageable, try to keep it intact. Apply a piece of moleskin, adhesive felt, or tape. (B) In these instances, you need to check the blister to determine if it needs a leak-proof drain. [substeps] See the " how to drain a blister " section of this article for instructions. (C) [title] Make a decision whether or not to drain the blister. [step] If the blister is very painful, medical sterilization is an option. (D) [substeps] There is no one right way to do this, so you have to be sure that you have the right technique. It is not as easy to clean a blister as to rinse with water and applying a sterile dressing.

Ex Output:
A


Ex Input:
[header] How to cut a fringe [title] Determine the kind of fringe you want, depending on your face shape. [step] If you have a long oval face with a wider forehead, try a blunt front fringe. If you have a smaller forehead and rounder face, try a side-swept fringe. <sep> (A) The width of your fringe should be the length from one arch of an eyebrow to the other. You can make it slightly wider, but don't make it too narrow. (B) If you have a shorter face with short hair, choose an updo with curlers. [title] Cut fringe off your forehead if you have very light hair. (C) [title] Cut away all of the fringe from your face, as that adds volume to your face. [step] If your forehead is wide and you want to end up with a scrunched face, try choosing the side-swept fringe. (D) But if you have a narrow face with a long face, try a side-swept fringe. [substeps] If you have a wide forehead with short hair, having fringe on the side-swept fringe can work great! [title] Buy a fringe body piece to line the face line.

Ex Output:
A


Ex Input:
[header] How to stop dizziness [title] Sit or lie down. [step] Dizziness or light-headedness usually hits when you are standing up or moving around. At the first signs of dizziness or light-headedness, sit or lie down immediately. <sep> (A) Dizziness not only hurts your head, but also inhibits you from seeing clearly. Look for swelling or bruising over your back. (B) This will usually help to relieve the spinning sensation and is safer in the event that you fall. [substeps] If you're sitting down, try putting your head between your legs. (C) Don't move or even breathe heavily or try to even your breathing or heart rate. Look for a calm place or view that you find calming. (D) [substeps] You can also sit on the floor to absorb the dizzy feeling. Place an arm or hand under your head and out in front of you.

Ex Output:

B