PLEASE HELP
Which of the following statements best describes the difference between a nebula and a supernova?
A) A nebula is a black hole that forms after the death of a star. A supernova is a burst of energy that is given off as a star is born.
B) A nebula is a cloud of gas and dust where stars are often formed after a supernova, which is a cataclysmic explosion that is caused when a star dies.
C) A nebula is a massive explosion that occurs when a star dies. A supernova is a cloud of gas and dust.
D) A nebula is what remains after the death of a star. A supernova is where stars are born.