In single inheritance, a base class exists in a(n) ___________ relationship with its derived classes.

The following items are inserted into an AVL tree: 1, 2, 3, 8, 6 . How many rotations are performed?

a. no rotations b. 1 single rotation only c. 1 double rotation only d. 1 single rotation and 1 double rotation e. none of the above

The ____________________ option is useful for creating blogs.

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