. It was the hardship _____ he experienced as a young man _____ made him what he is today.

A．that; that

B．that; which

C．which; who

D．that; who

有四个不同的自然数，它们当中任意两个数的和都是2的倍数，任意三个数的和都是3的倍数，则这四个数的和的最小值为( )。

A．48

B．40

C．44

D．60