1. Which of mathematical statement does NOT illustrate quadratic inequality? A. ax2 + bx+c = 0; where a, b, and care real numbers a 0 B. ax2 + bx+c < 0; where a, b, and care real numbers a + 0. C. ax2 + bx+c > 0; where a, b, and care real numbers a + 0. D. ax2 + bx + c < 0; where a, b, and care real numbers and a + 0.