The moment of inertia about the x-axis of the cross section shown is 245,833 cm^4. If the cross-sectional area is 250 cm^2 and the thickness of the web and the flanges are the same, what is the moment of inertia about the centroidal axis?
20 cm
centroidal X axis
20 cm
X
A. 2.1 x 10^4 cm^4
B. 8.0 x 10^4 cm^4
C. 1.5 x 10^5 cm^4
D. 2.5 x 10^5 cm^4