Question: help please 7 Let A = [4] and B = [3]. Which of the following functions are injective? * (2 Points) 1 2 3 4

help please

help please 7 Let A = [4] and B = [3]. Which of
7 Let A = [4] and B = [3]. Which of the following functions are injective? * (2 Points) 1 2 3 4 a. N 5 4 1 b. N W NW NUNUIN 1 WWW WWWH C. N 4 1 4 d.

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