Ali surveyed 200 students at a school and recorded the eye color and the gender of each student. Of the 80 male students who were surveyed, 60 had brown eyes. If eye color and gender are independent, how many female students surveyed would be expected to have brown eyes? 
选项为:A:$$5$$  B:$$20$$  C:$$30$$  D:$$90$$  E:$$100$$  请回答其中一个选项.