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 buy an engagement ring [title] Find out your what kind of rings your intended fiancee likes. [step] Knowing the styles of engagement rings she prefers will help you narrow down the vast list of possibilities. [substeps] If you want the engagement to be a surprise, pay attention to her comments on rings she sees or when other friends get engaged. <sep> (A) Some people like to be given a different ring in the hopes of developing a better understanding of their girlfriend's preferences. However, if this variety is not immediately apparent, you may be able to narrow down a ring that your fiance-type has. (B) Ask her friends if you're not sure. They will often know the styles she likes or exactly what she wants. (C) This will help you get a better idea of what kind of engagement rings she will like. If she likes thin rings, then think about choosing thin gold or platinum rings. (D) Look up both styles to determine which one suits her best. If you're interested in a different kind of engagement ring, it's best to research how each option would work.
Output:
B