________ summarize document features such as the number of pages, words, paragraphs, and lines

A ________ is the number of bytes that represent about one-half page of text

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

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