Laurie and Hannah Had Their Babies on the Same Day

Laurie and Hannah had their babies on the same day 12 weeks ago and have both decided to wait at least three years before having another child. Laurie is breastfeeding and Hannah is bottle feeding. Which is most likely to be true?

A) Laurie and Hannah are equally likely to become pregnant if neither uses birth control.
B) Laurie is more likely than Hannah to become pregnant soon because the hormones related to breastfeeding encourage ovulation.
C) Laurie is less likely than Hannah to become pregnant soon because breastfeeding releases hormones that discourage ovulation.
D) Hannah is less likely than Laurie to become pregnant soon because she has no sex drive; the sex drive is slow to return when you bottle-feed.