Samuel Goldstein, CFA, is an analyst for Tamarack Securities. Goldstein’s father, Reuben, has a client account at Tamarack. In ordering trades, Goldstein should place orders in:（）
A. his clients’ accounts first, his father’s account second, and his account last.
B. his clients’ and his father’s accounts in the first group and his personal accounts in the second group.
C. his clients’ accounts in the first group and his father’s and his own personal account in the second group.
