A number is divided into two parts in the ratio of 5 : 6 respectively. The sum of 60 percent of first part and 50 percent of second part is 8d: If both parts are increased by 10, then what will be the respective ratio between the sum of old numbers and new numbers?

A

73 : 87

B

71 : 87

C

75 : 87

D

77 : 87