After inserting an item in a binary search tree, the resulting binary tree must be a(n) ____________________.

Each SurfaceView subclass should implement the interface ________, which contains methods that are called when the SurfaceView is created, changed (e.g., its size or orientation changes) or destroyed.

a. SurfaceHolder.Callback b. SurfaceHolderCallback c. Surface.Callback d. SurfaceCallback

There are only two types of citation styles. 

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