which of the following sets is defined by {×= Z: -2 ≤ × ≤ 4}
(a) {0, 1, 2,3,4}
(b) { 1, 2,3,4}
(c) {-1,0,1,2,3}
(d) {-2,-1,0,1,2,3,4}


I know the answer I just want to know why it's the answer​