Which of the following correctly identifies the set of outputs? (4 points) a.) {−3, −1, 3, 4}
b.) {−5, −2, −1, 4}
c.) {(−5, 4), (−2, −1), (−1, 3), (4, −3)}
d.) {(4, −5), (−1, −2), (3, −1), (4, −3)}