What is true about the resultant hydrostatic force from fluid pressure onto an inclined, submerged planar surface?

Choose all statements that are true.

Question $3$ options:

The resultant forces acts somewhere below the centroid of the surface.

The magnitude of the force is equal to the pressure at the centroid of the surface multiplied by the surface area.

The resultant force acts at the centroid of the surface.

The magnitude of the force is equal to the pressure at the depth where the force acts multiplied by the surface area.

The resultant force acts somewhere above the centroid of the surface.