Manders Manufacturing Corporation Uses the Following Model to Determine an Optimal

Manders Manufacturing Corporation uses the following model to determine an optimal short-term product mix for its two products, metal (M) and scrap metal (S) :
Max Z = $30M + $70S
Where: 3M + 2S ≤ 15
2M + 4S ≤ 18
The above mathematical functions together constitute a(n) :

A) Simulation model.
B) Linear programming model.
C) Economic order quantity model.
D) Multivariate regression model.
E) Nonlinear optimization model.