But-2-yne and hydrogen (one mole each) are separately treated with (i) \(Pd / C\) and (ii) \(Na /\) liq. \(NH _3\) to give the products X and Y respectively.

Identify the incorrect statements.
A. X and Y are stereoisomers.
B. Dipole moment of X is zero
C. Boiling point of X is higher than Y.
D. X and Y react with \(O _3 / Zn + H _2 O\) to give different products.
Choose the correct answer from the options given below :

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.