As Per Ethical Codes, Which Is the Most Likely Case

As per ethical codes, which is the most likely case in which one can break confidentiality?

A) Your client admits to occasionally smoking marijuana.
B) The parents of a college student you are counseling demand to speak with you about their son.
C) Your supervisor wants to talk to you about a difficult case you are having.
D) Your client's psychiatrist calls because it is time for the client's Xanax refill and wants to know about her status.
E) A lawyer demands that you provide them the client's records for a child custody case.