Which of the Following Statements About Self-Awareness Is Incorrect

Which of the following statements about self-awareness is incorrect?

A) Self-awareness occurs earlier in children as a function of the amount of social stimulation they receive.
B) At 15 weeks of age,the home-reared infant in North America is in contact with its mother for about 20% of the time.
C) At 15 weeks of age,infants in the Ju/'hoansi society of South Africa's Kalahari Desert are in close contact with their mothers about 70% of the time.
D) American children develop self-awareness earlier than do Ju/'hoansi children.
E) Self-awareness comes in stages and not all at once.