When a Scuba Diver Is Deep Underwater and Exhales, Air

When a scuba diver is deep underwater and exhales, air bubbles form and rise to the surface of the water. Which of the following statements best describes what happens to the air bubbles as they rise to the surface?

A) The number of molecules in the bubbles increases, and the diameter of the bubbles increases.
B) The number of molecules in the bubbles decreases, and the diameter of the bubbles decreases.
C) The number of molecules in the bubbles remains the same, and the diameter of the bubbles increases.
D) The number of molecules in the bubbles remains the same, and the diameter of the bubbles decreases.