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 on the following questions.
A lot of athletic and non-athletic extracurricular activities are available in Vietnamese high-schools, either public and private.

A. available in

B.  non-athletic

C.  either public and private

D.  A lot of