Which sentence below best expresses the essential information in the highlighted sentence

in paragraph 4？ Incorrect choices change the meaning in important ways or leave out essential information．

A．Before the age of five, children think the longer line has more coins because they are incapable of understanding conservation．

B．Five-year-old children do not understand the value ofmoney, so they do not care if one line of coins is longer than another．

C．Because of the five-seven shift, children can understand why the longer row of coins is a better example of conservation．

D．Even if two rows of coins are different in length, very young children will say that both rows have the same number of coins．