Which Is the Conjugate Acid in the Following Reaction A) I
B) II
C) III
D) IV

Multiple Choice

Which is the conjugate acid in the following reaction? $$\begin{array} { l } \mathrm { HCl } &+& \mathrm { H } _ { 2 } \mathrm { O } ?&\mathrm { Cl } ^ { \ominus } &+& \mathrm { H } _ { 3 } \mathrm { O }^ { \oplus } \\\text { I }&&\text { II } &\text { III } &&\text { IV } \\\end{array}$$

A) I
B) II
C) III
D) IV