Which Statement Correctly Describes Hunting and Gathering

Which statement correctly describes hunting and gathering?

A) All humans began to obtain their food this way after agriculture was invented.
B) It is a form of nomadism that disappeared in the late 1900s after the fall of the Soviet Union.
C) This form of subsistence disappeared in the mid-1900s owing to industrialization and modernized agriculture.
D) Hunter gatherers cannot live for long in groups of less than 100 people owing to the necessary division of labor.
E) This form of subsistence is still practiced despite the modernization of agriculture in some areas.