Pea Plants Are Self-Pollinators

Pea plants are self-pollinators. What can you further deduce about peas? (Check all that apply.)

A) Peas will be more resistant to garden pests than other plants.
B) Peas are less likely to invade highly variable natural environments than other plants.
C) A gardener planning to collect heirloom seeds can plant different varieties of peas near each other.
D) Peas will be more resistant to new plant diseases.
E) To perform his pea cross-pollination experiments, Gregor Mendel must have first removed the stamens from flowers to prevent self-pollination.