In mathematics, what is the distinction between a "variable" and a "variate"?
A) A variable is a specific outcome of a random experiment, while a variate is a mathematical representation of a quantity that can vary.
B) A variable is a measurable mapping, and a variate is a particular outcome of a random variable.
C) The terms "variable" and "variate" are used interchangeably and have no significant differences.
D) A variable represents a quantity that can vary, while a variate is a specific numerical value of that quantity in a particular instance.