What Did Schein's (1989) Research Tell Us About Female and Male

What did Schein's (1989) research tell us about female and male leadership?

A) Female leaders are more aggressive yet less cost effective than males.
B) There are more differences within each sex than there are between the sexes.
C) Males are indifferent to stereotypical images of women leaders.
D) Both genders find it hard to let go of stereotypes.