Which of the Following Best Describes a Variable When Implemented

Which of the following best describes a variable when implemented in a script?

A) A portion of a script that executes multiple times until a condition is met.
B) A container for storing data values that can be assigned, referenced, and manipulated.
C) A line or portion of a script that the interpreter does not process.
D) The part of a filename used to designate a file's association with a particular script language.