Correct Answer - Option 4 : 86 : 100
The logic followed here is:
48 : 60
4 + 8 = 12
12 + 48 = 60
So, Option 1
64 : 72
6 + 4 = 10
10 + 64 ≠ 72
Option 2
98 : 114
9 + 8 = 17
17 + 98 ≠ 114
Option 3
78 : 94
7 + 8 = 15
15 + 78 ≠ 94
Option 4
86 : 100
8 + 6 = 14
14 + 86 = 100
Hence, the correct answer is "Option 4".