Correct Answer - Option 3 : Both University A and University B
The number of girls enrolled in University A in the year 2015 = 15000
The number of girls enrolled in University A in the year 2019 = 25000
The difference between the number of girls enrolled in the year 2019 and 2015 in the University A = 25000 - 15000
⇒ 10000
The number of girls enrolled in University B in the year 2015 = 10000
The number of girls enrolled in University B in the year 2019 = 20000
The difference between the number of girls enrolled in the year 2019 and 2015 in the University B = 20000 - 10000
⇒ 10000
The number of girls enrolled in University C in the year 2015 = 5000
The number of girls enrolled in University C in the year 2019 = 22500
The difference between the number of girls enrolled in the year 2019 and 2015 in the University B = 22500 - 5000
⇒ 17500
From the above observation,
University A and B both are having the minimum difference
∴ The minimum difference both University A and University B