Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information.
A.The purpose of a guild was to establish financial precedents that would benefit both the people who produced the crafts as well as their customers.
B.Guilds were established to ensure that all members who shared their knowledge of the craft would receive the same payment for their services.
C.Members of craft guilds had access to the collective knowledge possessed by everyone who practiced that same craft.
D.For centuries, craftsmen involved in a similar trade had been in guilds which provided them with economic protection and professional development.