can u explain this question please?

4. A large apartment building is to be built using modular construction techniques. The ar- rangement of apartments on each floor is to be chosen from one of three basic floor plans. Plan A has 3 three-bedroom units, 7 two-bedroom units, and 8 one-bedroom units on a floor. Plan B has 4 three-bedroom units, 4 two-bedroom units, and 8 one-bedroom units on a floor. Plan C has 5 three-bedroom units, 3 two-bedroom units, and 9 one-bedroom units on a floor. Is it possible to design the building so that it has exactly 66 three-bedroom units, 74 two- bedroom units, and 136 one-bedroom units? If so, is there more than one way to do it? Explain your answer. + Drag and drop your files or click to browse