A company is developing a linear programming model for its aggregate production plan. If It $=$ units in inventory at the end of period t$,$ Pt $=$ units produced in period t$,$ and Dt $=$ demand in period t$,$ then the company's demand constraint to ensure that demand is met in quarter $3$ is

Group of answer choices

D$3=$ I$2-$ I$3+$ P$3$

D$3=$ I$2-$ I$3+$ P$2$

Ans: A

Difficulty: Hard

Learning Objective: LO $4$

D$3=$ I$3-$ I$2+$ P$3$

D$3=$ I$3+$ P$3$