It is proposed that Cro-Magnons were responsible for the extinction of many large mammals during the Pleistocene epoch.How could this feat have been accomplished?

A)Cro-Magnon man had an increase in tool technology that enabled them to kill animals from a distance.
B)Cro-Magnon man was the first species of hominid to use fire.This would have increased their success during hunting.
C)Cro-Magnon man was the most efficient bipedal species.They would have been able to run after prey species more efficiently than any of their predecessors.
D)Cro-Magnon man was the first species of hominids to hunt in groups.This would have increased their chance of killing larger animals.