The correct option is C
This is clearly an intermediate step for Hofmann elimination. The substrate – which is a salt – contains the base OH−
as a part of it and the heat given according to the reaction points towards β
-elimination. The only question, which β
-hydrogen will be abstracted by the hydroxide base?
The Hofmann product, unlike the Zaitsev product, is one that is obtained based on the abstraction of the β
-hydrogen that is the least hindered. So the hydrogen attached to the homocyclic (cyclohexane) carbon is not abstracted. Any one of the 6 equivalent β
-hydrogen atoms are removed from the two equivalent (in terms of abstraction of β
-hydrogen) methyl groups attached to the α
-carbon. The above product is the overwhelming major product! The following is not formed.