问题详情

Which of the following statements is NOT a fact about Alvin？
A．It can carry explorers as deep as 6,500 meters.
B．It has played a key role in various important undersea expeditions
C．It was launched in the sixties of the twentieth century.
D．It has been used for more than 40 years.请帮忙给出正确答案和分析，谢谢！