You will be given a definition of a task first, then some input of the task.
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".

[header] How to find out if your guppy is pregnant [title] Notice a belly bulge. [step] Like women, the female guppy will get larger, as if it's being inflated. Sometimes this can just be bloating and not pregnancy. <sep> (A) If the guppy's belly part rises significantly, she is likely pregnant. If that happens, get to the hospital. (B) If your guppy seems to have a bulge, puts its back up against you, or moves around quite a bit, it may be pregnant! [title] Stick an ultrasound needle into her body. [step] These can be inserted through your guppy's pelvic wall. (C) Spotting that bulge requires a lot of attention. Fat glands on the belly are the first part of giving your water when you're carrying your baby. (D) But if you monitor your guppy's belly for several weeks and it continues to get bigger over time, your guppy is probably pregnant. [substeps] Your female guppy is getting close to delivery time when the she is very large and has a boxy appearance.
Output:
D