A and B started a business investing ₹ 10,00,000 and ₹ 15,00,000 respectively and C joined them after 6 months with an investment of ₹ 20,00,000. The ratio of the share of their profits at the endof the year is

A

3 : 2 : 3

B

2 : 3 : 2

C

1 : 3 : 1

D

2 : 3 : 4