The statement,"Production in October plus any available inventory must equal October's demand plus inventory held in November," is an example of a(n) ________.

A) proportional relationship
B) balance constraint
C) allowable increase
D) allowable decrease

Balance Constraint

A condition in mathematical models that ensures the total input into the system equals the total output, maintaining equilibrium.

Production

The process of creating, manufacturing, or producing goods and services, often involving a series of operations or stages.

Inventory

The total amount of goods and materials held in stock by a company, warehouse, or store.