QUIC When a small volume of water is boiled, a large volume of steam is produced. Why?

Water molecules repel each other when heated.
Water molecules repel each other when heated.

The size of the water molecules increases when heated.
The size of the water molecules increases when heated.

The molecules are further apart in steam than in water.
The molecules are further apart in steam than in water.

The change from water to steam causes the number of molecules to increase.