-( )can we contact you?-My e-mail address is sunshine@118.co

-( )can we contact you?-My e-mail address is sunshine@118.com.
-( )can we contact you?
-My e-mail address is sunshine@118.com.
A.How B.What C.Why D.How much 求answer,求reason ==
大家回答的都不错，本来想按时间，我还是中肯一点，看字数吧