When 50cm³ of a saturated solution of sugar (molar mass 342.0g) at 40^oC was evaporated to dryness, 34.2g of dry solid was obtained. The solubility of sugar at 40^oC is

• A.10.0 moles dm^-3
• B.7.0 moles dm^-3
• C.3.5 moles dm^-3
• D.2.0 moles dm^-3
• E.