All programming languages assign 0 to a variable you fail to initialize explicitly.

What is the value of the double variable x after each of the following statements is executed?

a) x = Math.Abs(7.5); b) x = Math.Floor(7.5); c) x = Math.Abs(0.0); d) x = Math.Ceiling(0.0); e) x = Math.Abs(-6.4); f) x = Math.Ceiling(-6.4); g) x = Math.Ceiling(-Math.Abs(-8 + Math.Floor(-5.5)));

You can view messages in the mbox file by using the ____ command.

A. mail -s B. mail -l C. mail -v D. mail -f