Consider the above reaction sequence, the Product ‘$\mathrm{C}$’ is

Consider the following reaction sequence

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The product '$\mathrm{B}$' is

Compound $\left(\mathrm{X}\right)$ undergoes following sequence of reactions to give the Lactone $\left(\mathrm{Y}\right)$.

'$\mathrm{R}$' formed in the following sequence of reaction is:

Given below are two statements :

Statement I :

 under Clemmensen reduction conditions will give 

Statement II :

 under Wolff-Kishner reduction condition will give 

In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: Acetal/Ketal is stable in basic medium.

Reason R: The high leaving tendency of alkoxide ion gives the stability to acetal/ketal in basic medium.

In the light of the above statements, choose the correct answer from the options given below:

The correct sequence of reagents for the preparation of $Q$ and $R$ is: