2. Consider the following three functions: f : Z+ x Z+ → Z+ f(m, n) = mn h: Rx Z+ → Z+ h(r, y) = 7y +1 g: Z+ → Z g(n) = n – 9 Which 3 of the following statements are true? Only 3 statements are true. A. f is injective (one-to-one). B. f is surjective (onto). C. g is injective (one-to-one). D. g is surjective (onto). E. h is injective (one-to-one). F. h is surjective (onto). G. g is invertible. H. The domain of the composition gof is Z+ I. The codomain of the composition gof is Z

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