Two solutions are stored separately in glass bottles: 7.00% (m/v) methyl pyruvate solution and 7.00% (m/m) methyl pyruvate solution. Determine the difference between them.

• A. 7.00% (m/v) methyl pyruvate solution contains 7.00 g methyl pyruvate per 1.00 mL methyl pyruvate solution, while 7.00% (m/m) methyl pyruvate solution contains 7.00 g methyl pyruvate per 1.00 g methyl pyruvate solution.
• B. 7.00% (m/v) methyl pyruvate solution contains 7.00 g methyl pyruvate per 100. mL methyl pyruvate solution, while 7.00% (m/m) methyl pyruvate solution contains 7.00 g methyl pyruvate per 100. g methyl pyruvate solution.
• C. 7.00% (m/v) methyl pyruvate solution contains 7.00 mg methyl pyruvate per 1.00 mL methyl pyruvate solution, while 7.00% (m/m) methyl pyruvate solution contains 7.00 mg methyl pyruvate per 1.00 g methyl pyruvate solution.
• D. 7.00% (m/v) methyl pyruvate solution contains 7.00 mg methyl pyruvate per 100. mL methyl pyruvate solution, while 7.00% (m/m) methyl pyruvate solution contains 7.00 mg methyl pyruvate per 100. g methyl pyruvate solution.

Answer: (B)