Determine whether the pairing of inputs and outputs create a function. If it is a function, describe the relationship between the input and output values.
x 4 5 6 7
y 11 13 15 17

Select one:

A. The pairing is a function. The relationship is: "input value multiplied by 3 then add 1."

B. The pairing is a function. The relationship is: "input value multiplied by 2 then add 3."

C. The pairing is a function. The relationship is: "input value multiplied by 2 then add 2."

D. The pairing is not a function.