A saturated solution of KCl has a concentration of 27.9 (m/v)%. Calculate the concentration of a KCl solution in (m/v)% prepared by diluting 39.7 mL of the saturated solution to 250. mL.

• A. 13.2 (m/v)%
• B. 7.89 (m/v)%
• C. 4.43 (m/v)%
• D. 1.42 (m/v)%

Answer: (C)