The reaction involves the reduction of cyclohexanone using \( \text{LiAlH}_4 \), which reduces the carbonyl group to a hydroxyl group, resulting in compound A. The hydrogenation of A with \( \text{H}_2/\text{Pt} \) reduces the double bond, forming compound B, a cyclohexane derivative.
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: