A Mixed Integer Linear Optimization Model Differs from a Nonlinear

A mixed integer linear optimization model differs from a nonlinear optimization model in that the mixed integer linear optimization model ________.

A) contains terms that cannot be written as constant times a variable
B) is considerably more difficult to solve than the nonlinear optimization model
C) uses equalities and inequalities to describe constraints in the business decision problem
D) contains only a subset of variables that are restricted to being integers while others are continuous