Banks & Jones, CPAs, performs a financial statement review for Meyer Markets. Charlie, the manager on the job, learns that Dan, a member of the review team, violated the independence rules because his sister works in a key position at Meyer. Under the $$Breach of an Independence Interpretation$$ interpretation, what is the first thing Charlie should do$?$

a$)$ Disclose the violation to the appropriate person in her firm in accordance with policy.

b$)$ Ask human resources to immediately investigate Dan's professional conduct.

c$)$ Determine whether Dan's participation on the review impaired the team's objectivity.

d$)$ Speak to the client's review partner about reperforming all of Dan's audit work.