Which of the Following Is NOT True

Which of the following is NOT true?

A) A fiduciary duty exists when there is an existing contract between the professional and the client.
B) The principles for determining damages for breach of contract and breach of fiduciary duty are not necessarily the same.
C) A fiduciary duty requires that a professional avoid situations that give rise to a conflict of interest.
D) The existence of a fiduciary duty means that a lawyer cannot,as a general rule,act for a purchaser and vendor at the same time.
E) A fiduciary duty requires complete fidelity and loyalty to the other party.