Calculate forces in members DC and DE for the truss shown in the figure. Hint: Use method of joints. Assume F 2 = 60 kN, F = 100 KN and L = 2.1 m. L(m) F F 4 m 4 m F B E F - 4 m A. SDC = 60.5 kN (T), SDE = -104.9 kN (C) B. SDC = 63.5 kN (T), SDE = -108.9 kN (C) C. SDC = 45.5 kN (T), SDE = -96.9 kN (C) D. SDC = 52.5 kN (T), SDE = -112.9 kN (C)