C-01-Q177mediumsingle_mcqFor f(x)=x−4f(x) = \sqrt{x - 4}f(x)=x−4, the domain is:a{x∈R:x≤4}\{x \in \mathbb{R} : x \leq 4\}{x∈R:x≤4}b{x∈R:x≥4}\{x \in \mathbb{R} : x \geq 4\}{x∈