e. All of these are correct contrasts.
Work Step by Step
Monocots only have one cotyledon, their leaf veins are parallel, they have pollen with three pores and the flower parts in threes. Eudicots, on the other hand, have two cotyledons, their leaves are not veined, they have pollen with one pore and the flower parts in fours or fives. Therefore, all the contrasts are correct and the answer is e.