A component is made of a brittle material that has prperties Sut=30 ksi and Suc= 90ksi. Use MNST, BCMT, MMT to determine if the component is safe for a design factor 1.5 at two points: (1) Point 1: sigma x = 15 ksi, sigma y = -15 ksi. (2) Point 2: sigma x = 11 ksi, sigma y = -21 ksi, max stress x y = 12ksi.