What Would Happen If the Fusion Rate in the Core

Multiple Choice

What would happen if the fusion rate in the core increased but the core could not expand?

A) The Sun's core would cool and the rate of fusion would decrease.
B) The Sun's core would reach a new equilibrium, but at a higher temperature.
C) The Sun's core would heat and the rate of fusion would increase further.
D) The Sun's core would reach a new equilibrium, but at a cooler temperature.