Consider the following statements:
I. $H{NO}_3$ (strong acid) behaves as a base in $HF$.
II. $H_2{SO}_4$ dissociates to a small extent in glacial acetic acid.
III. ${CH}_{3}COOH$ ( a weak acid) behaves as strong acid in ${NH}_3\left(l\right)$. Select the correct alternate for these statements:

The correct option is C I, II and III
I. $H{NO}_3$ (strong acid) behaves as a base in $HF$.Becuase $HF$ is more acidic than $HN{O}_3$ and $HN{O}_3$ donates proton.
II. $H_2{SO}_4$ dissociates to a small extent in glacial acetic acid.
III. ${CH}_{3}COOH$ ( a weak acid) behaves as strong acid in ${NH}_3\left(l\right)$. Select the correct alternate for these statements as $N{N}_3$ accepts proton strongly.
So all I,II,III are correct.
Hence option A is correct.