孕妇预防风疹的重要性主要是（）

A.避免发热

B.避免头痛

C.避免呕吐

D.避免把病毒传给胎儿

E.避免腹泻

An analyst does research about earnings per share and gathers the following information about a company for 2011:
·Net income is $6 360 000
·Preferred dividends paid is $460000
·Common dividends paid is $600000
·Shares outstanding are 2200000 on 1 January 2011
·Shares repurchased are 400000 on 1 July 2011
The company's basic earnings per share for 2010 is closest to:（）

A. $2.65

B. $2.95

C. $3.28