Select the set in which the numbers are related in the same way as are the numbers of the given sets. (NOTE: Operations should be performed on whole numbers, without breaking down the number 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.)
(8, 16, 4)
(14, 28, 7)

Information Given:
(8, 16, 4)
(14, 28, 7)

Logic:
Second number = First number × 2
Third number = First number ÷ 2

​(8, 16, 4)
8 × 2 = 16 ; 8 ÷ 2 = 4 

(14, 28, 7)​
14 × 2 = 28 ; 14 ÷ 2 = 7 

A) (18, 36, 7) → 18 ÷ 2 = 9 
B) (18, 38, 9) → 18 × 2 ≠ 38 
C) (16, 38, 9) → 16 × 2 ≠ 38 
D) (18, 36, 9) → 18 × 2 = 36 ; 18 ÷ 2 = 9 ✔

Final Answer:
(18, 36, 9)

Final Correct Option:
(D)