Select all input for which f(x)=2 choose all answers that apply:
a)x=0
b)x=4
c)x=6
d) none of the above

image of graph with question(Khan Academy:Function inputs and outputs:graph)

Sasha delivers newspapers to subscribers that live within a 4 block radius of her house. sasha's house is located at point (0, -1). points a, b, c, d, and e represent the houses of some of the subscribers to the newspaper. to which houses does sasha deliver newspapers?