Microphylls Differ from Megaphylls in That

Microphylls differ from megaphylls in that

A) microphylls are derived from female tissues, and megaphylls are derived from male tissues.
B) microphylls are thought to have evolved from sterile sporangia, whereas megaphylls evolved from modified branches.
C) microphylls have small xylem cells in their vascular tissue, whereas megaphylls have large xylem cells.
D) microphylls are thought to have evolved from small flaps of photosynthetic tissue between branches, whereas megaphylls evolved from large flaps of tissue between branches.
E) microphylls evolved before stomata, and megaphylls evolved after stomata.