Tìm x \(\in\) Z để x+3÷x-1(phân số) \(\in\)

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.

There are many frequently (A) mentioned (B) reasons why one out of four arrests (C) involve (D) a juvenile

A.frequently

B.mentioned

C.four arrests 

D.involve