Let f 4 5 7 7 11 13 be a bijection Which of the following statements must be true Select all that apply DA fof 13 13 OB fo f is

Question

Let f 4 5 7 7 11 13 be a bijection Which of the following statements must be true Select all that apply DA fof 13 13 OB fo f is the identity function on the set 7 11 13 OC f of is the identity function on the set 4 5 7 OD f f 7 7 DE f of is the identity function on the set 7 11 13 OF fo f is the identity function on the set 4 5 7

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