There is a mistake in the four underlined parts of each sentence. Find the mistake (A, B, C, or D)Vietnam is (A) an (B) multicultural country (C) with 54 (D) ethnic groups.

There is a mistake in the four underlined parts of each sentence. Find the mistake (A, B, C, or D)

Vietnam is (A) an (B) multicultural country (C) with 54 (D) ethnic groups.