1.Let f(x)=15−∣x−10∣f(x) = 15 - |x-10|f(x)=15−∣x−10∣, x∈Rx \in \mathbb{R}x∈R. Then the set of all values of xxx, at which the function g(x)=f(f(x))g(x) = f(f(x))g(x)=f(f(x)) is not differentiable, is:a.{5,10,15}\{5, 10, 15\}{5,10,15}b.{10}\{10\}{10}c.{10,15}\{10, 15\}{10,15}d.{5,10,15,20}\{5, 10, 15, 20\}{5,10,15,20}Login to continueOnly logged in users canattempt or see the solution.