A 10 volume solution of H2O2 means_______?

• A. 10 grams of H2O2 solution liberate 10 mL of O2 at STO
• B. 10 gram equivalents of H2O2 liberates 10 mL of O2 at STP
• C. 10 litres of H2O2 liberates 19 mL of O2 at STP
• D. 1mL of solution of H2O2 liberates 10 mL of O2 at STP