— _________

A. It's three dollars and seventy-five cent.

B. It's three dollar and seventy-five cent.

C. It's three dollars and seventy-five cents.

【答案】C

【解析】

句意：—这个多少钱？—...... A选项中cent应该用复数；B选项中dollar和cent都应该用复数；C选项是结构正确，意思是“它3美元75美分。”故答案为：C。