Select the pair from among the given options that is analogous to the given pair.
18 : 325
12 : 145
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
1
8 : 63
2
16 : 257
3
15 : 225
4
9 : 81
5
Question Not Attempted