Step 1: Concept
Reduction of nitro compounds using metals in acidic media ($Sn/HCl$ or $Fe/HCl$) yields primary amines.
Step 2: Analysis
Nitroethane ($CH_3CH_2NO_2$) is reduced:
$CH_3CH_2NO_2 + 6[H] \xrightarrow{Sn/HCl} CH_3CH_2NH_2 + 2H_2O$.
Step 3: Conclusion
The product is Ethanamine (Ethylamine).
Final Answer: (A)