Why Do Vapor Bubbles Get Larger in Boiling Water as They

Multiple Choice

Why do vapor bubbles get larger in boiling water as they approach the surface?

A) They only appear to get larger,this being a magnification effect due to looking through the water.
B) The bubbles' pressure increases as they rise.
C) The pressure in the water decreases as the bubble moves toward the surface.
D) Bubbles always get bigger after they form.