Which of the Following Statements Concerning the Spanish Commercial System

Which of the following statements concerning the Spanish commercial system is most accurate?

A) The merchant guild in Seville had virtual monopoly rights over goods shipped to America and handled much of the silver received in return until the 18th century.
B) All trade from Spain after the mid-16th century was funnelled through the city of Madrid.
C) Nearly all trade with the Spanish colonies was carried in ships built in the New World and captained by colonists.
D) The intent of the consulado was to keep prices in the Spanish colonies low.