A. three bar truss to resist a service load P= 100 kN is shown in the figure. Use a load factor of 2 and consider all three members to have equal cross-sectional areas. The yield stress of the material of which the members are fabricated is 400 MPa. The area of cross section of each truss member is

A

$$\frac{25}{26} cm^2$$

B

$$\frac{36}{25} cm^2$$

C

$$\frac{25}{13} cm^2$$

D

$$\frac{13}{25} cm^2$$