What Happens to the Surface Temperature and Luminosity When a Protostar

Multiple Choice

What happens to the surface temperature and luminosity when a protostar radiatively contracts?

A) Its surface temperature and luminosity increase.
B) Its surface temperature remains the same and its luminosity decreases.
C) Its surface temperature and luminosity decrease.
D) Its surface temperature decreases and its luminosity increases.
E) Its surface temperature and luminosity remain the same.