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(D) The transformation involves the selective reduction of an aldehyde group to a primary alcohol in the presence of a carboxylic acid,an ester,and an

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$C, D$

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(D) The transformation involves the selective reduction of an aldehyde group to a primary alcohol in the presence of a carboxylic acid,an ester,and an epoxide.$1$. $LiAlH_4$ is a strong reducing agent that reduces aldehydes,carboxylic acids,esters,and epoxides.$2$. $BH_3$ in $THF$ is a selective reducing agent that reduces carboxylic acids and aldehydes but can also react with epoxides.$3$. $NaBH_4$ is a mild reducing agent that selectively reduces aldehydes and ketones to alcohols without affecting carboxylic acids,esters,or epoxides.$4$. Raney $Ni / H_2$ is a catalytic hydrogenation reagent that reduces aldehydes and ketones but generally does not reduce carboxylic acids,esters,or epoxides under mild conditions.Therefore,both $NaBH_4$ and Raney $Ni / H_2$ can be used to achieve this selective transformation.

The reagent$(s)$ which can be used to bring about the following transformation is(are):
$(A)$ $LiAlH_4$ in $(C_2H_5)_2O$
$(B)$ $BH_3$ in $THF$
$(C)$ $NaBH_4$ in $C_2H_5OH$
$(D)$ Raney $Ni / H_2$ in $THF$

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The reagent$(s)$ which can be used to bring about the following transformation is(are):$(A)$ $LiAlH_4$ in $(C_2H_5)_2O$$(B)$ $BH_3$ in $THF$$(C)$ $NaBH_4$ in $C_2H_5OH$$(D)$ Raney $Ni / H_2$ in $THF$