What are characteristics of a male pelvis?

a. a greater true pelvis compared to the female, curved sacrum and coccyx
b. The angle at pubic symphysis is greater than 100 degrees.
c. The true pelvis is narrow compared to the female, the sacrum is flat, and the angle of pubic symphysis is less than 100 degrees.
d. The true pelvis is narrow compared to the female, the sacrum is flat, and the angle of pubic symphysis is greater than 100 degrees.