According to the first paragraph, we know centenarians will probablyA．receive a birthday c

According to the first paragraph, we know centenarians will probably

A．receive a birthday card from the British queen.

B．be called to donate a sample of their DNA for study.

C．be asked to reveal the secret of their longevity.

D．participate in a competition to win big money.

请帮忙给出正确答案和分析，谢谢！