Which of the Following Statements Is Atest Implication for the Theory

Multiple Choice

Which of the following statements is atest implication for the theory that "all birds can fly"?

A) If all birds can fly, then penguins can fly.
B) Helicopters should be considered birds.
C) Penguins are not birds.
D) Penguins are birds or they can fly.
E) No insects are birds.
F) none of these