Which Three Factors Are Most Characteristic of the Upper Paleolithic

Which three factors are most characteristic of the upper Paleolithic period?

A) specific regional adaptations;better hunting,fishing,and gathering techniques;complex tools
B) specific regional adaptations;better hunting,fishing,and gathering techniques;higher reliance on physical adaptation
C) an enhanced sense of smell;better hunting,fishing,and gathering techniques;complex tools
D) the first smelting of bronze tools;better hunting,fishing,and gathering techniques;higher reliance on physical adaptation