__In multistage equilibrium conversion of SO‚Äö√á√á to SO‚Äö√á√â (2SO‚Äö√á√á + O‚Äö√á√á ‚Äö√°√£ 2SO‚Äö√á√â), the reverse reaction becomes appreciable at a temperature of 550¬¨‚à û C. The percentage equilibrium conversion of SO‚Äö√á√á to SO‚Äö√á√â can be increased by__

• A. Increasing the oxygen concentration
• B. Putting more quantity of V‚ÇÇO‚ÇÖ catalyst in the converter
• C. Removing some quantity of SO‚ÇÉ during intermediate stage
• D. Maintaining low temperature & pressure in the converter