单项选择题Youaredesigningtheplacementoftheglobalcatalogservers.Youwanttousetheminimumnumberofglobalcatalogserversthatarerequired.Whichdesignshouldyouuse?()
A.One global catalog server in New York.
B.Two global catalog servers in New York.
C.One global catalog server in Chicago and one global catalog server in New York.
D.Two global catalog servers in Chicago and two global catalog servers in New York.
E.One global catalog server in Chicago, one global catalog server in New York, and one global catalog server in Boston.