S, T and U started a business and their capitals are in the ratio of 3 : 4 : 6. At the end they receive the profit in the ratio of 1 : 2 : 3. What will be the respectiveratio of time period for which they contributed their capitals?

• 3 : 2 : 2
• 2 : 3 : 3
• 2 : 2 : 3
• 4 : 5 : 3