7. A SAE steel column has a circular cross-section of 16 mm in diameter and a length of 320 mm. The material has an elastic modulus of 207 GPa and a yield strength of 290 MPa. Both ends are fixed on solid platforms. Using a design factor of 3, what is the allowable load to avoid buckling? Pick the closest answer in N. a) 20,321 b) 73,389 c) 38,527 d) 40,290 e) 17,571