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x for 1 5x 5 J5 f1(x)= 0 otherwise x2 for 1 s x s 1 f2(x) = 0 otherwise QUESTION: Assign f1(x) and f2(x) to the corresponding statements beiow depending on their given functions. (A) it is a valid probability function (B) it is not a valid pdf be It doesn't integrate to 1 over all possible values (C) it is not a valid pdf be It has negative possible values (D) it is not a valid pdf be It has negative densities at some values