determine a linear function from the data table which point is not part of the function?

x: 0, 1, 2, 3, 4,
f(x): 180, 174, 168, 162, 156,

a. (12, 108)
b. (30, 0)
c. (-15, 120)
d. (21, 54)
e. (8, 120)​