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 recognize and prevent a hookworm infection [title] Be aware of who is most at risk. [step] Some people are more likely to come into contact with hookworm infection than others due to their work, play, or other habits. Those most at risk include : [substeps] People who come into direct contact with soil contaminated with human feces such as gardeners, builders, plumbers, etc. <sep> (A) People with bare hands are at a higher risk for contracting hookworm with other people. Hookworm is a viral infection, and your body will not effectively fight the bacteria that makes up the infection. (B) Keep in mind that hookworm infection can cause gastrointestinal issues and can worsen over time. Tell your family, friends, and professionals what you are at risk of and where you are at before they know about it. (C) Products that might carry the disease contact with bee stings or pollination that might be harmful to bees also through play. Anyone under the age of 12 is at a higher risk. (D) Children who frequently play outside barefoot, or who play in contaminated soil. [title] Recognize the symptoms of a hookworm infection.

Ex Output:
D


Ex Input:
[header] How to find half of any number [title] Multiply the number by 5 (five), then move it a decimal point to the left. [step] 6 (six) times 5 is 30, for instance, so put the decimal point in between the 3 and the 0. That would just be 3! [title] Divide each number by 2 if you have two even digits. <sep> (A) [step] This is the most common number you'll see. Most also start with 1, but you can add in a number to improve. (B) [step] In our example , 16 = 53. If you have two numbers, the 2 would be 7. (C) [step] Divide the digits individually, then put them together. That may make a complicated process much simpler. (D) [step] For example , 2 + 3 = 2, so don't add 2. [title] Multiply the number by 5 (6), to get 5.

Ex Output:
C


Ex Input:
Then he washes it off using the water from the bathroom faucet and he looks in the mirror to know how much of it is gone. in the end <sep> (A) he rinses it off. (B) he puts it all back into the sink and his real shave is shown. (C) there is a contact case and he wipes the back of his hand over it. (D) , he looks again and it is all gone and he stops.

Ex Output:

D