Set X consists of all two-digit primes and set Y consists of all positive odd multiples of 9 less than 100. If the two sets are combined into one, what will be the range of the new set? Select the correct option: A) 84 B) 89 C) 90 D) 92 E) 95

Rationale: "set x = { 11 , 13 , 17 , . . . . . . . . . . . . . , 83 , 89 , 97 } set y = { 9 , 27 , 45 , . . . . . . . . . . . . . . . , 63 , 81 , 99 } combining two sets , say set z set z = { 9 , 11 , 13 , 17 , 27 , . . . . . . . . . . . . . . . . . . . , 63 , 81 , 83 , 89 , 97,99 } range = max value - min value range ( z ) = 99 - 9 = 90 oa c is the answer ."
Answer: C