What Is the Primary Reason That Early (Proto) Anthropologists Worked

What is the primary reason that early (proto) anthropologists worked in salvage anthropology?

A) They believed that Native cultures were going to disappear shortly and everything about earlier human stages would be lost.
B) They believed that science needed research material and they had to build large museum collections.
C) They believed that Western society needed to learn more from Natives so that Westerners would better adapt to the New World.
D) They saw ethnography as employment and wanted to exhibit Native peoples and artifacts to entertain and impress large audiences.