Suppose U={...-3,-2,-1,0,1,2,3,...} is the universal set and R={...-3,-1,1,3,...}. What is R'?

A.{-2,0,2}
B.{...-4,-2,0,2,4,...}
C.{...-4,-2,2,4,...}
D.{-4,-2,2,4}