Select the pair which is related to each other in the same way as the following

13:676

6:144

(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.)​​

13:676

6:144

Logic; Multiply by 2, then square the result.

For 13:676:

13 × 2 = 26, then 26² = 676.

For 6:144:

6 × 2 = 12, then 12² = 144.

Now, check the options:

A) 8:256

8 × 2 = 16, then 16² = 256.

Thus, correct option is (a)