An Egg Is Placed at the Bottom of a Bowl

An egg is placed at the bottom of a bowl filled with water. Salt is slowly added to the water until the egg rises and floats. From this experiment, we conclude that

A) egg-shell calcium is repelled by sodium chloride.
B) the density of salt water exceeds the density of the egg.
C) buoyant force does not always acts upward.
D) salt sinks to the bottom.
E) none of the above

Correct Answer:

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