A __________ of a class called My Class is another class whose methods call the methods of My Class.

In the following function, how many recursive calls are there?

void towers(char source, char dest, char help, int numDisks) { if(numDisks<1) { return; } else { towers(source,help,dest,numDisks-1); cout << "Move disk from " << source << " to " <

When a new item is added to an AVL tree

A) the tree may become unbalanced in only one way B) the tree may become unbalanced two different ways, but the two imbalances are mirror images of each other C) the tree may become unbalanced in four different ways, but because of mirror images, there are really only two fundamentally different imbalances D) the height of one of the subtrees of the root may become three times the height of the other subtree