1.Range of the expression 16x2−12x+916x2+12x+9\frac{16x^2 - 12x + 9}{16x^2 + 12x + 9}16x2+12x+916x2−12x+9 (x∈R)(x \in \mathbb{R})(x∈R) is -a.[13,3]\left[\frac{1}{3}, 3\right][31,3]b.[13,3)\left[\frac{1}{3}, 3\right)[31,3)c.[3,∞)[3, \infty)[3,∞)d.R\mathbb{R}RLogin to continueOnly logged in users canattempt or see the solution.