According to Stevenson and Stigler's Study on Cultural Differences in Math

According to Stevenson and Stigler's study on cultural differences in math performance at school,if American parents wanted their children to do well in math,what aspect of Chinese parenting should they mimic?

A) provide a desk at home for their children
B) teach their children numbers and math before entering kindergarten
C) give their children less schooling
D) learn how to do math in English
E) let the children set their own learning paces