What Happens If an Independence Threat Appears to Be Insurmountable

What happens if an independence threat appears to be insurmountable?

A) An audit firm should decline the offer to be the auditor of a prospective client or resign from the audit of an existing client.
B) The audit firm should contact the State Board of Accountancy so they can make a press release to discourage other accountants from taking the engagement.
C) The audit firm should make certain that safeguards are put in place to limit or remove those threats.
D) The audit firm should take the engagement and continue to make certain that safeguards are put in place to limit or remove those threats.