Select the set in which tile numbers are related in the same way as are the numbers of the following sets.

(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.

$$\left[\left(\frac{7}{9}\right), \left(\frac{31}{39}\right)\right], \left[\left(\frac{3}{5}\right), \left(\frac{15}{23}\right)\right]$$