The formula of ethanal is-

A. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CHO}$

B. ${\mathrm{CH}}_3\mathrm{COOH}$

C. ${\mathrm{CH}}_3\mathrm{CHO}$

"Enter your correct answer as A, B or C."

Identify the formula of ethyl ethanoate.

 $$\begin{gathered} A: {\mathrm{CH}}_3{\mathrm{COOC}}_2{\mathrm{H}}_5 \\ \mathrm{B}: {\mathrm{CH}}_3{\mathrm{COOCH}}_3 \\ \mathrm{C}: {\mathrm{CH}}_3{\mathrm{COOC}}_3{\mathrm{H}}_7 \end{gathered}$$

(Enter your correct answer as $\mathrm{A}, \mathrm{B} \mathrm{or} \mathrm{C}$)