Which of the following sentences is grammatically INCORRECT？A．Twenty years in prison were

Which of the following sentences is grammatically INCORRECT？

A．Twenty years in prison were the penalty he had to pay.

B．Acoustics is a branch of science that is growing fast.

C．Is draughts a game for two？

D．Good cutlery is expensive.

请帮忙给出正确答案和分析，谢谢！