Choose the word or set of words that, when inserted in the sentence, best fits the meaning ofthe sentence as a whole.

There was no denying the lecturer's ------- , but her arguments were unsophisticated and ------- .

(A) bravura . . precise
(B) boorishness . . unoriginal
(C) charisma . . vapid
(D) competence . . infallible
(E) indifference . . benign

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