Acidity order of 

$\begin{array}{l}{\mathrm{CH}}_3\mathrm{COOH},{\mathrm{CF}}_3{\mathrm{CO}}_2\mathrm{H},\mathrm{PhOH}\\ \mathrm{I} \mathrm{II} \mathrm{III}\end{array}$

-I effect increases the acidity order. Moreover phenols are weaker acids that carboxylic acids. Hence the order is II>I and phenol the least of all.