Okhekgfhhhfz4go Okhekgfhhhfz4go Mathematics Answered Which relation is not a function? A {(10,−5),(8,−4),(4,−2),(2,0)} B {(1,−2),(1,−4),(1,0),(1,8)} C {(−3,9),(−2,4),(−1,1),(1,1)} D {(3,10),(5,−5),(6,6),(9,11)}