A Century Ago, Studies of Objects Were Largely Studies of Material

A century ago, studies of objects were largely studies of material culture and the technology available to people living in small-scale societies with simple technologies. The modern anthropological approach to objects has done which of the following?

A) caused anthropologists to challenge whether these museum collections were representative of the technologies of the time or if they were biased
B) led anthropologists to recognize that objects change meaning over time
C) pushed anthropologists to take a critical approach to the motives of the collectors of these early museum collections
D) all of the above