GRE Logical Reading: ETS-GRE逻辑单题ETS - J94UOB00LK9S57I2J$

The archaeologists' argument assumes which of the following about the artisans who worked in the workshops' A. They were themselves prosperous members of a middle class. B. They lived near their workshops. C. Their products were not made from the same materials as was jewelry for the nobility. D. They worked full-time at making jewelry and did not engage in farming E. They did not take the jewelry they had made in the workshops to clients who were members of the nobility.