Cyclohexane Is Manufactured from the Reaction of Benzene with Hydrogen $\rarr$

Multiple Choice

Cyclohexane is manufactured from the reaction of benzene with hydrogen:
C₆H₆(g) + 3 H₂(g) $\rarr$ C₆H₁₂(g)
If the initial concentration of hydrogen was 1.5 M and 5 minutes later the hydrogen concentration is 0.34 M, what is the average rate of appearance of cyclohexane?

A) 0.39 M/min
B) 7.7 x 10^-2 M/min
C) 4.6 M/s
D) 3.9 x 10^{- 2} M/hr
E) 2.3 M/min