The shear flow in the thin-walled member varies ( ) along the segments that are ( ) or ( ) the direction of the shear force V. On the cross section, the shear "flows" along the segments so that it contributes to the shear force V yet satisfies horizontal and vertical ( ).
A.
parabolically, inclined, parallel to, force equilibrium
B.
linearly, inclined, parallel to, force equilibrium
C.
linearly, inclined, parallel to, moment equilibrium
D.
parabolically, perpendicular to, parallel to, force equilibrium