Aldehydes Ketones And Carboxylic Acids

Reagents which can be used to convert alcohols to carboxylic acids, are

(A) \(\mathrm{CrO}_3-\mathrm{H}_2 \mathrm{SO}_4\)

(B) \(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7+\mathrm{H}_2 \mathrm{SO}_4\)

(C) \(\mathrm{KMnO}_4+\mathrm{KOH} / \mathrm{H}_3 \mathrm{O}^{+}\)

(D) \(\mathrm{Cu}, 573 \mathrm{~K}\)

(E) \(\mathrm{CrO}_3,\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}\)

Choose the most appropriate answer from the options given below :