Cho dãy các hợp chất sau: phenol (1), etanol (2), nước (3), axit etanoic (4), axit clohiđric (5), axit metanoic (6), axit oxalic (7), ancol propylic (8). Thứ tự tăng dần tính axit là
A.(8), (2), (3), (1), (7), (4), (6), (5).
B.(8), (2), (1), (3), (4), (6), (7), (5).
C.(3), (8), (2), (1), (4), (6), (7), (5).
D.(8), (2), (3), (1), (4), (6), (7), (5).