Anna-Maria asserted that she learned little from the presentation, but not so much because the lecturer was abstruse as because he was -------; that is, the lecturer was perfectly -------, but he simply would not commit to any one stance.
(A) equivocal . . intelligible
(B) exhausting . . understandable
(C) ambiguous . . comprehensive
(D) facile . . reasonable
(E) recondite . . entertaining
Answer: (A)