Which of the following details about Chelsea Clinton and Marc Mezvinsky is INCORRECT？A．The

Which of the following details about Chelsea Clinton and Marc Mezvinsky is INCORRECT？

A．They have established the loving relationship for a long time.

B．They were engaged during the thanksgiving holiday.

C．They announced their engagement via email.

D．Chelsea Clinton has gained dual graduate diploma.

请帮忙给出正确答案和分析，谢谢！