Let f be an injective map with domain x y z and range 1 2 3 such that exactly one of the following s...........

Let f be an injective map with domain {x,y,z} and range {1,2,3} such that exactly one of the following statement is correct and the remaining are false: f(x) =1, f(y) ¹1, f(z) ¹2. The value of f^-1 (1) is

none of these