REDUXIEIN REDUXIEIN Math Answered Which of the following is a polynomial?i. 4x³ + 9x - 5x² + 7ii. 2x^-5 + x^-2 + x^-3 + 2x + 5iii. 1/x² + 3x + 6A. i onlyB. ii onlyC. i and iiD. i and iii