Which statement best differentiates systemic and contact pesticides?

Which statement best differentiates systemic and contact pesticides?

• A. Systemic pesticides are absorbed and move through the plant; contact pesticides act on surfaces and pests without systemic movement.
• B. Systemic pesticides remain on the plant surface; contact pesticides are absorbed by roots.
• C. Systemic pesticides evaporate quickly; contact pesticides become part of the plant.
• D. Systemic pesticides target only mammals; contact pesticides target only insects.

Answer: (A)