Which Statement Best Describes Imperial Rome's Gladiatorial Shows

Which statement best describes Imperial Rome's gladiatorial shows?

A) They were increasingly associated with religious practices.
B) They were government-backed spectacles used to content the masses.
C) They were limited to fights between slaves and criminals trained at gladiatorial schools.
D) They paled in popularity to the Circus Maximus.
E) They were outlawed by Augustus as being in violation of his policy of moral reform.