When sorting a table that has a header row, in the Sort dialog box, each column's header text displays in the ________ by list

The Cloud is an Internet technology

Indicate whether the statement is true or false.

Agnes has been using XQuery to design queries using path expressions. Her next project will involve multiple source documents and require more complicated criteria. She has heard that a FLWOR structure could be effective for such cases, and comes to you for assistance in developing a FLWOR structure query. Agnes is confused by the rules about how many of each type of clause are required in a FLWOR structure. You tell her that in a FLWOR structure, there must be exactly only one _____ clause.?

A. ?where B. ?for C. ?let D. ?return