You May Have Heard That Monarch Butterflies (And Their Caterpillars)

You may have heard that monarch butterflies (and their caterpillars) are "poisonous" to many predators. What makes these insects so toxic?

A) Monarch caterpillars produce cardenolides in their digestive tracts.
B) Monarch caterpillars use cardenolides from milkweed to synthesize toxins.
C) Monarch caterpillars ingest milkweed latex, which "chokes" their predators.
D) Monarch caterpillars store cardenolides from milkweeds.
E) Monarch caterpillars secrete latex from their bodies.