In a mixture, water and milk are in the ratio of 3 : 5. In the second mixture, the ratio of water and milk is 9 : 11. If these two mixtures be mixed to form a new mixture in which water and milk are in ratio 5 : 7, then what is the ratio of these two mixtures in the new mixture?

• A. 1 : 2
• B. 3 : 2
• C. 4 : 5
• D. 4 : 7