What chance does a ___ man who never finished high school have?

What chance does a ___ man who never finished high school have?
A、forty-years-old
B、forty-years-olds
C、forty-year-old
D、forty-year-olds
【正确答案】:C
【题目解析】:forty-year-old, 的正确表达方式,为复合形容词,