C-01-Q165mediumsingle_mcqFor F(x)=x−1F(x) = \sqrt{x - 1}F(x)=x−1, F(a2+1)F(a^2 + 1)F(a2+1) where a∈Ra \in \mathbb{R}a∈R equals:aaaab∣a∣|a|∣a∣ca2a^2a