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".

Example Input: The man takes a shot at the gift wrapping. The lady finishes wrapping the gift. The man folds an edge, and the lady tapes it. the man <sep> (A) opens the package and allows the lady to remove a box lid. (B) closes and rewraps the gift. (C) squeezes her hand, and she takes a picture. (D) presents the box to the camera and talks.
Example Output: D

Example Input: [header] How to handle having a toxic mother [title] Be aware that your mother might not realise that what's she's doing or saying is affecting you. [step] Try talking about it with her, telling her how you feel. You might be surprised to find that she's actually quite understanding; after all, she's human too. <sep> (A) [title] If you're really dealing with a toxic mother, be caring. [step] Basically, try your best to show she is not hurting you. (B) [substeps] You might be embarrassed, and really hurt. Try to talk to her about your feelings instead. (C) [substeps] You could say, " i feel frightened about what you're telling me. I wish i could make you feel better, but i don't know how. (D) [title] Choose the right time to talk it over. [step] There is a wrong time for you to have this conversation.
Example Output: D

Example Input: [header] How to identify canine flea problems [title] Look for behavioral signs of a flea infection. [step] Is your dog scratching itself more than usual? Is it gnawing at its coat? These are signs that your dog might have fleas. [substeps] Flea bites can cause itchiness on the dog's skin. <sep> (A) Flea bites can also appear as other symptoms of fleas, such as a rash. You may see different white patterns appear on your dog's skin, such as irregularities on the legs. (B) The bites can make small red bumps on the skin and continue to itch for some time. Some animals can actually be allergic to these bites, making the itching and redness more intense and widespread. (C) There may be substantial accumulating beard hairs, brown hair, or quills. Even fleas that come from dog's fur may cause itching that leads to cushing's disease. (D) These sores are believed to be caused by fleas. White pus-filled sores, discolored gums, itchy or red spots may appear after scratching.
Example Output:
B