When Harvard President Lawrence Summers Proposed That Women's Innate Aptitude

When Harvard President Lawrence Summers proposed that women's innate aptitude for science is less than men's,

A) he mentioned stereotypical views of women's innate deficiencies in math and science.
B) he quoted recently published research indicating that women's lower math ability blocks their science achievement.
C) he also mentioned discrimination in education and employment as more important barriers.
D) he emphasized the importance of the female gender role.