单选题According to Karen Norberg, ______.A among children born out of wedlock there were more girls than boys.B the chance of a woman giving birth to a girl is higher if she has been living with a man before the child was conceived.C for parents who were not

among children born out of wedlock there were more girls than boys.

the chance of a woman giving birth to a girl is higher if she has been living with a man before the child was conceived.

for parents who were not cohabiting, boys were born 51.5% of the time.

women who have not been living with a man are more likely to have daughters.