The sentence" From costing nothing children suddenly come to seem impossibly expensive" （P

The sentence" From costing nothing children suddenly come to seem impossibly expensive" (Para. 2) implies that ______.

A．food and clothing for babies are becoming incredibly expensive

B．prices are going up dramatically all the time

C．to raise children women have to give up interesting and well-paid jobs

D．social development has made child-raising inexpensive