A, B and C started a business. They partnered for 6 months, 12 months and 14 months respectively. If their profit is in the ratio 5 : 4 : 7 respectively, then the ratio of their respective investments is ______.
1
5 : 2 : 3
2
1 : 5 : 3
3
2 : 3 : 7
4
2 : 3 : 5