In the given reaction, \[ \begin{aligned} \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}+\mathrm{...
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0In the given reaction,
\[
\begin{aligned}
\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}+\mathrm{XH}_{2} \mathrm{SO}_{4}+\mathrm{YSO}_{2} \longrightarrow \\
\mathrm{K}_{2} \mathrm{SO}_{4}+\mathrm{Cr}_{2}\left(\mathrm{SO}_{4}\right)_{3}+\mathrm{ZH}_{2} \mathrm{O}
\end{aligned}
\]
\[
\mathrm{X}, \mathrm{Y}, \mathrm{Z} \text { are }
\]
(A) \( 1,3,1 \)
(B) \( 4,1,4 \)
(C) \( 3,2,3 \)
(D) \( 2,1,2 \)
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