Select the option that is related to the fifth number in the same way as the second number is related to first number and the third number is related to the fourth number.
72 : 99 :: 69 : 165 :: 65 : ?
First number + (Reverse of first number) = Second number. 72 + 27 = 99 69 + 96 = 165 65 + 56 = 121