Liquid benzene (C6H6) burns in oxygen according to, 2C6H6 (l) + 15O2 (g) 12CO (g) + 6H O (g) How many litre of O at STP are needed to complete the combustion of 39 g of liquid benzene ?

• A. 11.2 litre
• B. 22.4 litre
• C. 84 litre
• D. 74 litre