A Vessel contains some water . It is moved towards right on a horizontal plane with a constant acceleration ‘a’ which of the following figures represents correct water surface

When a vessal containing  water is given a constant acceleration a towards  the right,a force acts on water to wards right.As  an action the water  exerts a force on the wall of vessal towards right.As a reaction the wall pushes the water towards left. P is a particle of water.F is the resultant  of mg and ma.the surface of water should set it self at${\text{90}}^{\text{0}}\text{to}\text{F}$