Which of the following is NOT a background property?

Answer the following statements true (T) or false (F)

1. A binary search can only be used on a sorted array. 2. The tower function that solves the Towers of Hanoi problem has three parameters. 3. Iteration is usually more efficient than recursion. 4. If a path through a function is missing a return statement the compiler will not detect the error. 5. If error checking is done inside a recursive function it will perform more efficiently.

All of the following are alert styles that appear if a user enters invalid data EXCEPT ____.?

A. ?Abort B. ?Information C. ?Warning D. ?Stop