(A) The `pK_(a)` value of acetic acid is lower than that of phenol.
( R) Phenoxide ion is more resonance stabilized.
A. If both (A) and (R) are correct and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct but (R) is not correct explanation of (A).
C. If (A) is correct but (R) is incorrect.
D. If (A) is incorrect but (R) is correct.