Q: 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 file criminal charges in california [title] Dial 911 to report a crime in progress. [step] Use 911 for emergencies. Call 911 after the fact if people are injured, or if you fear for your safety or think the person will come back. <sep> (A) Describe your concerns to the dispatcher and either wait until after the incident has been reported or wait until the police arrive to call 911. [title] Meet deadlines for reporting charges in progress. (B) Try to remain calm, and give the operator a detailed description of where you are. [substeps] If anyone is injured, assess their condition as best you can so the 911 operator will know what level of response is required. (C) Reporting a crime in progress is more helpful and time-bound than reporting a legitimate crime. [substeps] Call 911 in an emergency whenever someone is injured or you are in immediate danger. (D) Make sure you write down all details about the incident that gave rise to your charge with your phone, as well as the names of any witnesses you think might be able to testify on your behalf. [substeps] Call 911 to report a crime to a mobile or toll-free number.
A:
B