Which of the following functions is continuous but not differentiable in its domain? OA. m(X)= 1 defined on the real space R. x2 +2 O B. g (X) = defined on interval (-200, 200). x+2 OC. f(x) = =(x+ 1) defined on interval (-200, 200). O D. h(x) = (x-1)3 -3 defined on the real space R.Use Cramer's rule to solve the following system of linear equations: 5351+ 2x2 = 9 7x1 +3132 2 3 Show necessary steps for full credit. Correct solution obtained without using Cramer's rule results in zero mark