the grocery store

119) It’s time to buy pet food again and Lisa heads to the grocery store with $40 in her purse, leaving her seven hungry cats and four hungry dogs at home. Dog food costs $1 per can and cat food costs $0.50 per can. Dogs eat two full cans of food each day but cats eat only one can. Lisa would like to buy enough food to last through her three-day weekend. What is one appropriate constraint for this scenario?

A) 7C + 4D ≥ 3

B) 1C + 2D ≤ 40

C) .5C + 1D ≤ 40

D) 7C + 4D ≥ 1.5