According to the Most Recent Edition of the APA Ethical

According to the most recent edition of the APA ethical code, which of the following statements are true regarding multiple relationships?

A) All multiple relationships are unethical.
B) Multiple relationships are unethical only when the client is harmed by them.
C) Multiple relationships are unethical only when they can be reasonably expected to cause impairment in the psychologist or risk exploitation or harm of the client.
D) Multiple relationships are unethical only when they are sexual in nature.