In a set of reactions, ethylbenzene yielded a product D. The reaction sequence is:
Ethylbenzene → [KOH] → KMnO₄ → B → [Br₂/FeCl₃] → C → [C₂H₅OH, H⁺] → D
The correct structure of product D is: 

Consider the following reaction sequence.
Which of the following hydrocarbons reacts easily with MeMgBr to give methane? 