A unit conducted a year-end evaluation, after a democratic vote, identified A, B, C, D, E five people as the candidates for the first prize  In the selection of five into four, the following factors need to be taken into account: 1) at least one of C and D is selected  2) if E is selected, then An and B are also selected
3)Of the three people in A and B and D, at most 2 were selected
B