Which of the Following Statements Accurately Describes the Role of Insects

Which of the following statements accurately describes the role of insects in early angiosperm evolution?

A) Insect pollination may have allowed early angiosperms to thrive in the understory habitats of tropical rain forests.
B) Insect pollination may have allowed early angiosperms to thrive in the canopy of tropical rain forests.
C) Mammal pollination may have contributed to early angiosperm success.
D) Very few living members of the earliest angiosperm groups produce flowers that are visited by insects.
E) Insects did not play a significant role in early angiosperm evolution.