The correct order of strengths of the carboxylic acids

Options

A. I `gt` II `gt` III
B. II `gt`III `gt` I
C. III `gt` II `gt` I
D. II `gt` I `gt` III

Answer

B

Explanation

Key idea Order of strengths of the given carboxylic acids can be determined by the concept of I-effect.
The oxygen atom present in the ring shows I-effect. As the distance between oxygen and -COOH group increases, -I effect of oxygen decreases.
Thus, corresponding carboxylic acid will show less acidic nature.
The correct order of strengths of the carboxylic acids is