An LP Model for a Marketing Research Application Uses the Variable

Multiple Choice

An LP model for a marketing research application uses the variable HD to represent the number of homeowners interviewed during the day.The objective function minimizes the cost of interviewing this and other categories.There is a constraint that HD ≥ 100.The solution indicates that interviewing another homeowner during the day will increase costs by 10.00.What does this tell you about the HD variable? ​

A) The objective function coefficient of HD is 10.
B) The dual price for the HD constraint is 10.
C) The objective function coefficient of HD is −10.
D) The dual price for the HD constraint is −10.