Four cube-shaped blocks are floating in equilibrium in a tank of water. Blocks A, B, and C have the same size. Block D is larger than the others. The masses of the blocks are unknown.a. Rank the magnitudes of the buoyant forces acting on blocks A, B, C, and D in order of greatest to smallest.b. Rank the masses of the blocks from greatest to smallest.c. Rank the densities of the blocks from greatest to smallest.