Where Does Hydrostatic Equilibrium Exist in the Sun

Multiple Choice

Where does hydrostatic equilibrium exist in the Sun?

A) only in the core, where energy production via fusion can balance gravity
B) in the outer layers of the atmosphere, where most of the visible light is produced
C) just outside the core, where heat from nuclear fusion is transported outward
D) throughout the Sun's interior.
E) only in the photosphere.