Which of the Following Statements Is True of the Glass

Which of the following statements is true of the glass ceiling?

A) When executives choose a successor for a top position, they tend to choose someone who is different from them.
B) The existence of "glass walls" facilitates important lateral movement within an organization.
C) Prevailing attitudes are invisible obstacles to women's advancement.
D) Women represent a large percentage of top executives and board members in American companies.