The capacity of a "28 S type" concrete mixer is 0.8 m3. For mixing one cubic meter of concrete, the quantity of cement required is 5.5 bags. In order to avoid fractional usage of cement bags, the volume of concrete (in m3) to be mixed per batch will be

• A. 0.79
• B. 0.55
• C. 0.73
• D. 0.44