Mark the letter A, B, C, or D on...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Her application for a visa was turned down not only because it was incomplete and incorrectly filled out but also because it was written in pencil.

A. for a visa

B. down

C. incomplete

D. pencil