Article 44 of the "Criminal Procedure Law" stipulates that the victim of a public prosecution case and his legal representative or close relatives have the right to Appoint litigation attorney. In option A, Zhang is the victim and his father is a close relative. Since the case is transferred for review and prosecution, he has the right to appoint a litigation attorney, so option A is correct. Article 44 of the Criminal Procedure Law stipulates that private prosecutors and their legal representatives in private prosecution cases have the right to entrust litigation agents at any time. In option B, the embezzlement crime case is a private prosecution case. Zhao is the private prosecutor and has the right to entrust a litigation agent at any time. Option B is correct. Article 281 of the Criminal Procedure Law stipulates that close relatives and other interested parties of criminal suspects and defendants have the right to apply to participate in proceedings, and may also entrust a litigation agent to participate in proceedings. In option C, Wang’s wife is a close relative and can entrust a litigation attorney. Option C is correct. Article 286 of the Criminal Procedure Law stipulates that when a people's court hears a compulsory medical treatment case, it shall notify the respondent or the defendant's legal representative to be present. If the respondent or defendant has not appointed a litigation agent, the people's court shall notify the legal aid agency to designate a lawyer to provide legal aid. In option C, Ma did not entrust a litigation attorney. The people's court has the obligation to notify the legal aid agency instead of "may", so option D is wrong.