All of the following are violations of Standard Ⅲ (B), Fair Dealing, EXCEPT a member:()
A. places a trade for her discretionary accounts before placing a trade for her non-discretionary accounts.
B. places a trade for the firm account before issuing a buy recommendation.
C. telephones clients in distant cities the day after a buy recommendation is mailed to all clients because their mail service is later than the member’s local clients.