May Has Experience Developing Applications Using XSLT 1

Multiple Choice

May has experience developing applications using XSLT 1.0, and would like to take advantage of some of the added features of XSLT 2.0 in developing a new application. She comes to you for help implementing some of these new features.
-May has heard that XPath 2.0 allows an application to retrieve data from multiple document sources. She would like to be able to retrieve data from all XML files in the same folder as the current style sheet. You suggest she use the function _____ to enable this situation.

A) collection('/?select=*.xml')
B) document() '.?select=*.xml')
C) collection('.?select=*.xml')
D) document() '/?select=*.xml')