The survey of bright children was made to______.A．find out what had happened to talented c

The survey of bright children was made to______.

A．find out what had happened to talented children when they became adults

B．prove that talented children "burn themselves out" in the early years

C．discover the percentage of those mentally ill among the gifted

D．prove that talented children never burn themselves out

请帮忙给出正确答案和分析，谢谢！