Which of the Following Statements About the Disproportionate Number of Males

Which of the following statements about the disproportionate number of males and females is true?

A) Sperm containing a Y chromosome swim faster than those containing an X chromosome.
B) Male fetuses are more vulnerable to miscarriage than are female fetuses.
C) Cultural values and governmental policy contribute to the differences in the number of male and female babies born and raised in some societies.
D) Statements A and B are true.
E) All of the statements are true.