Identify the correct reagents for the given r | vedclass

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(A-D) The reaction sequence involves the following steps:$1$. Step $(A)$: Protection of the ketone group as a cyclic acetal using ethylene glycol $(HO

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$D: H_3O^+$

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(A-D) The reaction sequence involves the following steps:$1$. Step $(A)$: Protection of the ketone group as a cyclic acetal using ethylene glycol $(HO-CH_2-CH_2-OH)$ in the presence of an acid catalyst $(H^+)$.$2$. Step $(B)$: Reduction of the ester group $(-CO_2CH_3)$ to a primary alcohol $(-CH_2OH)$ using a strong reducing agent like $LiAlH_4$.$3$. Step $(C)$: Mild oxidation of the primary alcohol to an aldehyde $(-CHO)$ using $CrO_3$ in $CH_2Cl_2$ (Collins reagent or similar mild oxidant).$4$. Step $(D)$: Deprotection of the cyclic acetal back to the ketone using aqueous acid $(H_3O^+)$.

Identify the correct reagents for the given reaction sequence:

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