In a loaded beam under bending
(a) Both the maximum normal and the maximum shear stresses occur at the skin fibers
(b) Both the maximum normal and the maximum shear stresses occur at the neutral axis
(c) The maximum normal stress occurs at the skin fibers while the maximum shear stress
occurs at the neutral axis
(d) The maximum normal stress occurs at the neutral axis while the maximum shear stress
occurs at the skin fibers