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 connect a rubber band to your braces [title] Get instructions from your orthodontist. [step] When you're prescribed braces and rubber bands, your orthodontist should go over instructions with you. Rubber bands are applied in different ways depending on the structure of your mouth and what issue your orthodontist is trying to correct. <sep> (A) You should ask them first about any questions you have regarding your rubber bands. If you are confused about any instructions after leaving the office, call your orthodontist. (B) [substeps] For instance, say you are having trouble with your mouth but your doctor tells you to avoid chewing gum. She might suggest switching to a licorice-burning rubber band with a stipulation that it will only cause you pain. (C) This can help you determine which options are best for you. [substeps] Ask your orthodontist about the advantages of rubber bands. (D) [title] Choose an orthodontic brand. [step] Braces often come with their own specific metal inserts.
A