A tapered column assembly is made up from a square tubes having cross- sectional as shown in the figure. The axial loads PA=200KN and PB-350 kN are applied to the column at levels A and B. Evaluate the axial stress in segment BC of the column. Neglect the self-weight of the structure PB 150 mm, (1) 1₁ = 12 mm 150 mm (2) (a) C 1, 15 mm 18.02 MPa (C) 31.53 kN (C) O NOT IN THE CHOICES 31.53 MPa (C) 49.55 MPa (T) 49.55 MPa (C) 200 mm (b) 200 mm