Alice is a systems administrator for her company. Her company temporarily shuts down overnight due to a hurricane. Alice receives a call on her emergency mobile phone from someone claiming to be the chief operating officer $($COO$),$ asking for information about the company's offsite backup account for the website. Alice verifies the caller ID to ensure that the call came from a known number. This access control is part of which of the following?

A$.$ Business continuity

B$.$ Risk acceptance

C$.$ Risk transference

D$.$ Disaster recovery