• Subject:

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• Topic:

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In the reaction, the compound 'X' is:

(a) ${\mathrm{CH}}_{3}\mathrm{COOH}$

(b) $\mathrm{Br}·{\mathrm{CH}}_{2}\mathrm{COOH}$

(c) $\left({\mathrm{CH}}_{3}\mathrm{CO}{\right)}_{2}\mathrm{O}$

(d) $\mathrm{CHO}·\mathrm{COOH}$