Match Each Element of an Expression with Is Definition

Short Answer

Match each element of an expression with is definition:
I. Identifiers
II. Operators
III. Functions
IV. Constants
V. Variables
A. Produce results based on inputs
B. Values that do not change
C. Arithmetic instructions such as * , / , + , or -
D. Elements with a changing value
E. The names of fields, controls, or properties