What is the range of the given function?

A. {x | x = –5, 1, 4, 6}
B. {y | y = –7, –1, 0, 9}
C. {x | x = –7, –5, –1, 0, 1, 4, 6, 9}
D. {y | y = –7, –5, –1, 0, 1, 4, 6, 9}