Beam ACB has a pin support at A and is supported at C by a steel column with a square cross section (E = 190 GPa, b = 42 mm) and height L = 5.25 m. The column is pinned at C and fixed at D. The column...

Beam ACB has a pin support at A and is supported at C by a steel column with a square cross section (E = 190 GPa, b = 42 mm) and height L = 5.25 m. The column is pinned at C and fixed at D. The column must resist a load Q at B with a factor of safety of 2.0 with respect to the critical load. The maximum permissible value of Q is approximately:

(A) 3.0 kN

(B) 6.0 kN

(C) 9.4 kN

(D) 10.1 kN