1.The domain of the function f(x)=x−1+6−xf(x) = \sqrt{x-1} + \sqrt{6-x}f(x)=x−1+6−x isa.[1,∞)[1, \infty)[1,∞)b.[1,6][1, 6][1,6]c.(−∞,6](-\infty, 6](−∞,6]d.(−∞,6)(-\infty, 6)(−∞,6)Login to continueOnly logged in users canattempt or see the solution.