$\text{HC}\equiv {\text{CH + CO + H}}_{\text{2}}\text{O }\underset{ }{\overset{{\text{NiCl}}_{\text{2}}}{\to }}\text{ A}$.

Product ‘A’ in the above reaction is 

• A

  Propanoic acid 

• B

   Acrylic acid 

• C

  Acetic acid

• D

  Formic acid