The key contrast in comparison between a simple leaf and a compound leaf is that

A) a leaf blade is the only structure of a simple leaf, while compound leaves have leaflets.
B) there are no stomata in the simple leaves, but there are stomata in compound leaves.
C) simple leaves have xylem only, while compound leaves have both xylem and phloem.
D) parallel veins are in the simple leaves, while compound leaves have netlike veins.
E) petioles are absent on simple leaves.