Number of students in institutes A and B were in the ratio of 7 : 15 respectively in 2012. In 2013, the number of students in institute A increased by 25% and number of students in institutes B increased by 26%, then what was the respective ratio between number of students in institutes A and B?

• A. 25 : 56
• B. 24 : 55
• C. 24 : 53
• D. 25 : 53
• E. 25 : 54