A Nonlinear Optimization Model Differs from a Mixed Integer Linear

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

A) contains terms that cannot be written as constant times a variable
B) is considerably more easy to solve than the mixed integer linear optimization model
C) uses equalities and nonequalities 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