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).  

Which of the following is a reducing agent for the conversion of compound (C) to (D)?

4[H]/ Ni

The correct answer is option 1. 4[H]/ Ni