OG12-122，一道数学题DS求教

reddragon

What is the volume of a certain rectangular solid?
(1)Two adjacent faces of the solid have areas 15 and 24, respectively;
(2)Each of two opposite faces of the solid has area 40.

答案是C，但是(2)中Each of the two opposite faces应该是指任意两个相对的面的面积都是40啊。。。不太明白，请大家解释一下。按我的理解应该是B。