The correct order of acidic strength of the major products formed in the given reactions, is: A. PhNH_2 →[ (2) CuCN (3) H_3 O^+ / Δ ] (1) NaNO_2+ HCl…

The correct order of acidic strength of the major products formed in the given reactions, is : A. $\displaystyle \mathrm{PhNH}_2 \xrightarrow[\substack{(2) \mathrm{CuCN} \\ (3) \mathrm{H}_3 \mathrm{O}^{+} / \Delta}]{\text { (1) } \mathrm{NaNO}_2+\mathrm{HCl}\left(<5^{\circ} \mathrm{C}\right)}[\mathrm{A}]$ B. $\displaystyle \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CHO} \xrightarrow[\Delta]{\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+}, \mathrm{OH}^{-}}[\mathrm{B}]$ C. $\displaystyle \mathrm{CH}_4+\mathrm{O}_2 \xrightarrow[\text { (ii) } \mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_7 / \mathrm{H}^{+}]{\text {(i) } \mathrm{Mo}_2 \mathrm{O}_3}[\mathrm{C}]$ D. $\displaystyle \mathrm{PhCH}_2 \mathrm{MgBr}+\mathrm{CO}_2 \xrightarrow[\mathrm{H}_3 \mathrm{O}^{+}]{\text {Dry ether }}[\mathrm{D}]$ Choose the correct answer from the options given below :