________ are the fields for which summary statistics are calculated

What will be displayed when the following lines are executed?

txtBox.Clear() For k As Integer = 1 To 3 txtBox.Text &= "ABCD".Substring(4 – k, 1) Next (A) ABC (B) CBA (C) DBA (D) DCBA (E) DCB

An array with two subscripts for each element is a(n) ____________________ array.

Fill in the blank(s) with the appropriate word(s).