In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 ? 2SO3), the reverse reaction becomes appreciable at a temperature of 550 C. The percentage equilibrium conversion of SO2 to SO3 can be increased by ?

A. Removing some quantity of SO3 during intermediate stage

B. Increasing the oxygen concentration

C. Maintaining low temperature & pressure in the converter

D. Putting more quantity of V2O5 catalyst in the converter

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