Given the task definition and input, reply with output. 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 make a lie sound convincing [title] Think about why you need to lie. [step] Everyone lies once in a while, but take a minute to consider whether lying is really worth it in this case. Lying takes a lot more mental capacity than telling the truth, and you might get in trouble if you get caught. <sep> (A) [substeps] You might have a good reason for lying, such as trying to keep a friend in the dark about a surprise party. If this is the case, try not to feel bad about it because you're actually doing something nice! Never tell a lie for no reason at all. (B) [title] Act like the customer has nothing to fear. [step] Say, " my dear mr cleanser, i think you are a wonderful customer, but we have a lot to worry about here. (C) [substeps] Write down a reason why you can't lie, and why it's important to you. [title] Think of the " problem words " or how you would like the lie to sound when said out loud. (D) [substeps] For example, if you want to rub someone the wrong way, think clearly whether using humor will work. Stop using humor at the beginning of a lie.
A