An Organic compound (A) having molecular formula C₂H₄O when reacts with methyl magnesium iodide followed by acid hydrolysis to give isopropyl alcohol which on reaction with hydrogen iodide gives (B). Compound (B) on reaction with potassium cyanide gives (C). (C) on reduction gives an amine (D).  

What is the name of the compound (A)? 

Acetaldehyde 

The correct answer is option 2. Acetaldehyde.