A Planetary Nebula Is Created

Multiple Choice

A planetary nebula is created

A) over several hundred years, during mass transfer in a close binary star system.
B) over a few thousand years or more, in a slow expansion away from a low-mass star, driven by a series of thermal pulses from helium fusion.
C) in hours or less, during the explosion of a massive star.
D) in seconds, during the helium flash in a low-mass star.