Plane Truss with Span Length L = 4 $( E = 170 \mathrm { GPa } )$

Multiple Choice

plane truss with span length L = 4.5 m is constructed using cast iron pipes $( E = 170 \mathrm { GPa } )$ with a cross-sectional area of $4500 \mathrm {~mm} ^ { 2 }$ The displacement of joint B cannot exceed 2.7 mm. The maximum value of
Loads P is approximately:

A) 340 kN
B) 460 kN
C) 510 kN
D) 600 kN