What does the author really mean when he says “ I prepared for an unfruitful year with Mr. Fleagle and for a long timewas not disappointed”?

A. His expectation was right that Mr. Fleagle’s lessons were interesting.
B. His expectation was right that Mr. Fleagle’s lessons were dull.
C. He is satisfied with Mr. Fleagle's lessons.
D. He likes Mr. Fleagle.