阅读理解：Excavations at a Mayan site have uncovered je

阅读理解：Excavations at a Mayan site have uncovered jewelry workshops located some distance from the center of the site on roads radiating outward from the center. Since the nobility lived only in the area of the center, archaeologists conclude that these workshops made jewelry, not for the nobility, but for a middle class that must have been prosperous enough to afford it.
1.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.
全文翻译：
对一处玛雅文明遗址的挖掘中，发现了若干珠宝工坊，散落于由遗址中心向外散射的路上，相隔一定的距离。
因为贵族只住在中心区域，于是考古学家们认为，这些工坊不为贵族生产的珠宝，而是服务于一些，已经足够富裕到可以消费这些珠宝的中产阶级。