Select the option that has the same relation with the fifth number as the second number is with the first number, and the fourth number is with the third number.

(Note: Operations must be performed on whole numbers without splitting the numbers into their constituent digits. For example – operations on 13, such as addition / subtraction / multiplication etc. must be performed on 13 only. Splitting 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

4 : 6 :: 8 : 14 :: 16 : ?