The live load and dead load in a three storeyed residential building, transferred through a single column, is 12 tons and 18 tons respectively. If the soil bearing capacity is 10 ton/sqm and the factor of safety is 1.5, the area of column footing is _____________ sqm (up to one decimal place).

• A. 4.0 to 5.0
• B. 5.0 to 6.0
• C. 6.0 to 8.0
• D. 8.0 to 9.0