A ToolTip is a _____________ that allows the programmer to create a small popup message that displays when the user places the mouse over a control.

The ________ operator can be used to concatenate two or more strings to create a single string

A) + B) == C) *= D) !

Heapsort uses

a. percolate up only b. percolate down only c. both percolate up and percolate down d. neither percolate up nor percolate down