Cho các chất sau: C2H

Câu hỏi: Cho các chất sau: C2H5OH, CH3COOH, HCOOH, C6H5OH.

A. C6H5OH, C2H5OH, HCOOH, CH3COOH.

B. C2H5OH, C6H5OH, CH3COOH, HCOOH.

C. C6H5OH, C2H5OH, CH3COOH, HCOOH.

D. C2H5OH, C6H5OH, HCOOH, CH3COOH.