Solve schematically,

a$)$ Which internal forces and moments $(Mx,My,Mz,N,Ty,Tz)$ are under consideration in $C$ section

of pipe $(p$ is in $x$ direction, $q$ is in $z$ direction, $p+q$ is in $y$ direction$).$ Show the directions of moments

as two$-$arrow vector in section.

Section C