Which of the following are accurate statements about ash trees, according to the passage?
I. Ash trees with ash yellows disease are easily cured.
II. Ash trees infected with ash yellows usually die after having the disease for two to ten years.
III. Ash trees infected with ash yellows do not usually recover.
IV. Ash trees infected with ash yellows sometimes appear to recover in the spring.
F. I, II, III, IV
G. II and III only
H. I and IV only
J. II, III, and IV only