翼状胬肉头端前沿的角膜上有棕黄色线，呈垂直位( )

A．Bitot斑
B．Kayser-Fleischer环
C．Fleischer环
D．Vogt线纹
E．Stocker线

Bob Hatfield, CFA, has his own money management firm with two clients. The accounts of the two clients are equal in value. Hatfield has been trading on the clients’ behalf with a single brokerage firm for several years. Because of his many years of business, the brokerage firm occasionally gives Hatfield shares in an initial public offering (IPO) to sell to his clients. Hatfield has a policy of allocating the IPO shares equally between the portfolios of the two clients. This policy is :（）

A. congruent with Standard Ⅲ (C), Suitability.

B. a violation of Standard Ⅲ (C), Suitability.

C. a violation of Standard Ⅲ (B) , Fair Dealing.