Select the set in which the 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.)
(12, 38, 26)
(50, 75, 25)

(12, 38 ,26)

(50, 75, 25)

Logic: ​1st Number + 3rd Number = 2nd Number.

(12 + 26) = 38

(50 + 25) = 75

Let's check each options:

(8 + 7) = 15 $$\not=$$​ 32

Option B: (21, 40, 15)

(21 + 15) = 36 $$\not=$$​ 40

Option C: (9, 28, 16)

(9 + 16) = 25 $$\not=$$ 16​

Option D: (14, 42, 28)

(14 + 28) = 42 (Follow)

So, ​(14, 42, 28), as it follows the pattern.

Thus, the correct option is: (d)