The false statements are always executed using:

When a parameter is declared using the __________ qualifier, the procedure has access to the original argument variable and may make changes to its value.

a. ByValue b. ByAddress c. ByRef d. ByDefault

If the item to be inserted in an AVL tree is already in the tree, the search ends at a ____.

A. leaf node B. linear subtree C. linked subtree D. nonempty subtree