In a Study Reported in the Text, Italian and American

In a study reported in the text, Italian and American mothers' expectations of children's physical developmental milestones were examined. What were the results?

A) American mothers expected their children to reach physical milestones earlier than Italian mothers did.
B) Italian mothers expected their children to reach physical milestones earlier than American mothers did.
C) Both Italian and American mothers expected their children to reach physical milestones earlier than is expected of children their age.
D) Both American and Italian mothers expected their children to reach physical milestones later than is expected of children their age.