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 choose a mortgage broker [title] Get recommendations from others. [step] Start your search for a mortgage broker by getting recommendations from friends, real estate agents, colleagues, and other homeowners. Your real estate agent will likely have acquaintances in mortgage lending that they have been working with for a long time, or you colleagues might be in a similar financial situation and have advice on which broker to seek out. <sep> (A) [title] Identify the competitive formula for converting commercial mortgage interest rates (apr). [step] Apr refers to interest rate payments that are converted into a mortgage rate. (B) [substeps] It will be beneficial to your search to ask as many others for recommendations as possible. This stage is about collecting information to make the most informed decision possible. (C) [substeps] Find your real estate broker by asking your friends and colleagues. If people ask you for recommendations, they will probably have referrals already. (D) [substeps] Ask family and friends if their mortgages are of similar quality to yours. You can also ask people who own private equity for recommendations.
B