Which one of the basic equation of simple bending is correct:where I = Moment of Inertia, E = Modulus of Elasticity, F = Stress at any fibre at a distance of y from neutral axis, M = Bending momentand R = Radius of curvature.

• A. \(\frac{M}{I} = \frac{F}{Y} = \frac{R}{E}\)
• B. \(\frac{M}{I} = \frac{F}{Y} = \frac{E}{R}\)
• C. \(\frac{F}{I} = \frac{M}{Y} = \frac{E}{R}\)
• D. \(\frac{F}{I} = \frac{Y}{M} = \frac{R}{E}\)