Why Are Girls Expected to Get Married So Young-Even Before

Why are girls expected to get married so young-even before or just after puberty-in some countries?

A) Parents may not live long enough to provide security or they may want one less child at home to feed.
B) Girls are perceived to be less helpful workers around the farm or house.
C) Girls typically mature much earlier than boys.
D) Girls are perceived as more likely to just obey their parents.
E) Girls are perceived as less able to care for themselves.