已知全集U={x∈N*|x<9 },集合∁U(A∪B)={1,3},A∩∁UB={2,4},则集合B等于( )
A.{1,3,5,6,7,8} B. {2,4,5,6,7,8} C. {5,6,7,8} D. {1,2,3,4}
C