- m m n m - n n m - n n m - m n m m - n

A) m n m m n

B) m m n m n

C) m m m n m

D) m n n n m

Correct answer:
B) m m n m n

Description for Correct answer:
The series is m m m n / m m n n / m n n n / m m m n / m m n n


Please provide the error details in above question