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 dry a dog [title] Allow the dog to air dry naturally. [step] This is the easiest and most enjoyable way for the dog to dry. After getting wet, the natural reaction of many dogs is to shake from side to side with great vigor to release the water. <sep> (A) Dry the dog by waving a towel near the dog and holding it in front of him as you shake. Dry dogs naturally shake after an accident, while dirty dogs are especially prone to shake from side to side. (B) This helps air to flow through the dog's body and speeds the drying process. [substeps] Letting your dog dry upside down with its chest out can help with this. (C) In less than 4 seconds of shaking, dogs can shake up to 70% of the water from their fur. [title] Stand back and allow the dog to shake the water from his or her fur. (D) To encourage this, your dog has to naturally dry themselves faster because you are taking a short nap before allowing him to dry itself. [substeps] Wait until after a shower or bath to air dry your dog.

Ex Output:
C


Ex Input:
[header] How to elevate your hand while sleeping [title] Sleep on your back or side. [step] In order to elevate your hand while you're sleeping, you'll need to sleep on your back or on the side opposite of the arm that needs elevation. This is the easiest resting position for elevating your hand. <sep> (A) [substeps] Lying on your side not only has been shown to help alleviate hand inflation, but it also improves circulation in and around the hand and wrist joints. It's also more efficient than sleeping on your side. (B) [substeps] You can use a pillow to support your arm when you start to feel like your hand's elevating off the ground. Place a rolled up towel over your head to help prevent air from pooling near your arm. (C) [substeps] Sleeping on your stomach won't allow you to elevate your hand as easily. It's much harder to prop it up from behind if you're lying flat on your stomach. (D) [substeps] Lie on your back with the pillow propping your head up at a 45 degree angle. Your dominant hand should support the bottom of your pillow.

Ex Output:
C


Ex Input:
The gymnast hops up onto a platform using his hands. The gymnast spins around the platform using hes hands to hold his weight. the gymnast <sep> (A) performs several flips and tricks on the balance beam. (B) dismounts from the platform. (C) hammer out her baton across her chest. (D) performs a split calf bend.

Ex Output:

B