A:C3H6与C5H10
B:C4H6与C5H8
C:C3H8与C5H12
D:C2H2与C6H6
I find hard to learn English well.
已知全集U={1,2,3,4,5},集合A={1,2.4},集合B={1,5},则A∩CUB=( )