Which of the following choices completes the sentence correctly? A(n)______ is a(n) _______.

_____ is a popular format for compressing a sound sequence into a very small file while preserving the original level of sound quality when it is played.

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

When the Microsoft Translator analyzes text, the ____ may also appear.

A. Grammar Checker B. Spelling Checker C. Mini toolbar D. Both A and C.