When \( 12.2 \mathrm{~g} \) of benzoic acid is dissolved in \( 100 \mathrm{~g} \) of water, the freezing point of soluti…

When \( 12.2 \mathrm{~g} \) of benzoic acid is dissolved in \( 100 \mathrm{~g} \) of water, the freezing point of solution was found to be \( -0.93^{\circ} \mathrm{C} \) \( \left(\mathrm{K}_{\mathrm{f}}\left(\mathrm{H}_{2} \mathrm{O}\right)=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right) \). The number (n) of benzoic acid molecules associated (assuming 100 % association) is

[JEE Main 2021, 26 Feb (Shift 2)]