Thermal decomposition of propane can progress by two different gas phase reaction pathways: 

(R1): C₃ H₈ ↔ C2 H4 + CH₄ 

(R2): C₃ H₈ ↔ C3 H₆ + H₂ 

10 mol/s of propane enter a reactor in which R1 and R2 occur simultaneously. The exiting stream is at equilibrium. Find the composition of the exiting stream if the reactor is at 

A. T = 500 K and P = 1 bar. 

B. T = 1000 K and P = 1 bar. 

C. T = 1000 K and P = 5 bar.