Which of the Following Statement(s)is(are)correct

Which of the following statement(s) is(are) correct?

A) Plants produce nearly 400,000 known secondary compounds.
B) High concentrations of tannins attract insects to oak trees.
C) Cyanogens are not toxic and do not affect the hormonal balance and life cycles of insects.
D) Rotenone is derived from Chrysanthemum cinerariaefolium.
E) All of the above are incorrect statements.