A beam simply supported over a span of 5 m, is loaded with a central point load of 80 kN. The section of the beam is a rectangle, 200 mm wide and 400 mm deep. At a cross- section distant 2 m from the support, at a point 75 mm from the N.A. Find the principal stresses (a) 9.844 N/mm (Ten), 4.219 N/mm (comp) (b) 9.844 N/mm (Comp), 4.219N/mm (Ten) (c) 9.844N/mm(comp), 4.219N/mm(comp) (d) 9.844 N/mm (Ten), 4.219 N/mm (Ten)