Integer linear optimization models differ from nonlinear optimization models in that integer linear optimization models ________.

A) contain some or all variables that are restricted to being whole numbers
B) use only inequalities to describe the constraints
C) use only equalities to describe the constraints
D) contain terms that cannot be written as constant times a variable

Integer Linear Optimization Models

Mathematical models used in operations research that seek to maximize or minimize a linear objective function subject to a set of linear constraints and integer variables.

Nonlinear Optimization Models

Mathematical models dealing with optimization problems where the objective function or any of the constraints are nonlinear.

Integer

A whole number, positive, negative, or zero, without fractions or decimals.