Think about what happens to the volume of an air-filled balloon on top of water and beneath

Question:

Think about what happens to the volume of an air-filled balloon on top of water and beneath the water. Then rank the buoyant forces on a weighted balloon in water, from greatest to least, when it is
a. Barely floating with its top at the surface.
b. Pushed 1 m beneath the surface.
c. Pushed 2 m beneath the surface.