Question: The increasing order of the reactivity of the following with $\mathrm{LiAlH}_{4}$ is :
$(\mathrm{A})<(\mathrm{B})<(\mathrm{D})<(\mathrm{C})$
$(\mathrm{A})<(\mathrm{B})<(\mathrm{C})<(\mathrm{D})$
$(B)<(A)<(D)<(C)$
$(\mathrm{B})<(\mathrm{A})<(\mathrm{C})<(\mathrm{D})$
Correct Option: 1
Solution: