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:
This video allows viewers to hear the testimony of a customer who has used the pro roofing service. First the man tells how he heard about the service and how great it is. he <sep> (A) also says that he chose pro roofing because the neighbors chose it and persuaded him by telling how great the service is. (B) gets the materials to do the job and is joined by a group of small children who are drinking lemonade at the lemonade stand and talking. (C) starts by explaining how he is going to first tell the detail of creating a casing using an iron, then he starts on eggs and bacon. (D) talks about some graphic details.

Ex Output:
A

Ex Input:
[header] How to reduce fat in your cooking [title] Use broth in place of butter or oil in dishes like mashed potatoes, stir-fry or meat marinades. [title] Substitute applesauce or pureed prunes for butter or oil in baked goods such as cakes, cookies and pastries. [step] Use the same amount called for in the recipe. <sep> (A) Keep in mind your needs vary from recipe to recipe. [title] Try to reduce the number of butter or oil you add into your recipe. (B) [title] Replace cream in recipes with plain yogurt. [step] Yogurt can also be used in place of sour cream on a baked potato or in mexican dishes. (C) Too much fat may cause your cookies and pastries to cook unevenly and cause a hollow cavity or gap in the crust. [substeps] For example, use a bit of ground turkey instead of water in a pasta saute pan. (D) [title] Moisturize your skin when cooking. [step] Peeling and flaking your skin is an easy way to boost your immune system.

Ex Output:
B

Ex Input:
A view is seen of the outside of an airport, then the wing of the flying plane. A man is on the plane wearing a mask. several people <sep> (A) are sleeping in the dark quarters. (B) fly by on a road inside the plane. (C) are shown flying the aircraft, while shooting at a large target at one point. (D) speak, then they all fly kites on the plane while people walk by.

Ex Output:
A