Problem $10\mathrm{.}1\mathrm{.}4$

$10\mathrm{.}1\mathrm{.}4.$ Determine the axial force, shear force, and bending moment acting on the cross section of the beam in E$10\mathrm{.}1\mathrm{.}4$ at

a$.$ point $C$

b$.$ point $D$