Assume Young's modulus for bone is 1.50 x 10^10 N/m^2. The bone breaks if stress greater than σ = 72907 N/m^2 is imposed on it. What is the maximum force (in Newton) that can be exerted on the femur bone in the leg if it has a minimum effective radius r=0.01 m?
A. 11.45
B. 45.81
C. None
D. 4.786
E. 22.9