Use Descartes' rule of signs to determine the possible number of positive and negative real zeros for the following function. Then, use a graph to determine the actual numbers of positive and negative real zeros. P(x)=x³-12x²-- - 15x + 26 What is the possible number of positive real zeros of this function? OA. 2 or 1 OB. 3 or 1 OC. 4 or 2 OD. 2 or 0

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