General Studies · Analogy

Two sets of numbers are given below. In each set, certain mathematical operations on the first number result in the second number, operations on the second number result in the third number, and operations on the third number result in the fourth number. Which of the given options follows the same set of operations? Sets: 7-49-69-59 ; 5-25-45-35 (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits.)