At Elevated Temperatures, Methylisonitrile (CH₃NC) Isomerizes to Acetonitrile (CH₃CN)

At elevated temperatures, methylisonitrile (CH₃NC) isomerizes to acetonitrile (CH₃CN) :
CH₃NC (g) → CH₃CN (g)
At the start of an experiment, there are 0.200 mol of reactant and 0 mol of product in the reaction vessel. After 25 min, 0.108 mol of reactant (CH₃NC) remain. There are _ _ mol of product (CH₃CN) in the reaction vessel.

A) 0.200
B) 0.308
C) 0.540
D) 0.022
E) 0.092