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 relieve constipation after surgery [title] Use a stool softener. [step] One of the first medications to try if you're feeling constipated is a stool softener. These are easy to find over-the-counter and can help get you back on track. <sep> (A) [substeps] The way that stool softeners work is that they draw water into your stool from your intestines. This makes your stool softer and easier to pass. (B) [title] Take 600ml of stool softener before a meal. [step] Most stool softeners kill the production of prostaglandins. (C) [substeps] One good option for relieving constipation at the time of surgery is a stool softener. While stool softeners do provide temporary relief from constipation, they are expensive and will often disappoint you. (D) These medications are named for their antioxidant properties, which help reduce diarrhea and keep your stools from becoming irritated. [substeps] Remember that: the next time you're using an over the counter stool softener treatment, be sure to follow the dosing instructions.

Ex Output:
A


Ex Input:
[header] How to benefit your company financially by leasing a fleet [title] Take advantage of freed up cash. [step] The biggest benefit to fleet vehicle leasing is the cash that becomes available for your business. A significantly smaller upfront investment is required when you decide to lease rather than own your fleet. <sep> (A) Delta and f11 are both prime examples of free cash enabling vehicles to pull. On the same note, you'll know you're diversifying if you mix up your cash amount if you do lease a fleet. (B) However, plan to take advantage of this cash if your fleet is large. [substeps] You can offer a firm discount for what you receive, but there is nothing warranty-free. (C) A well-written lease agreement reduces fleet costs to a monthly operating expense, while keeping credit lines clear and cash on hand to re-invest into the company. The money that would have gone into buying and maintaining a fleet can be used to grow the core business. (D) Typically, you can catch abreast of as many business windbacks as you need to take advantage of the surprise of the change money. And, when you initially sign the lease, you can be liable for the cost on the time you have set aside.

Ex Output:
C


Ex Input:
The woman is putting make up to the boy's face, and then the boy shows his face. Then, the woman put make on a girl face. the boy and the girl <sep> (A) look their faces on a mirror making funny faces and waving. (B) are shown doing make up while their mom looks on. (C) are watching the girls. (D) dance while the woman put make up to the boy's face, then the man put make things on the faces of the boy and the girl also.

Ex Output:

A