The Logistics/operations Manager of a Mail Order House Purchases Two $\le$

The logistics/operations manager of a mail order house purchases two products for resale: King Beds (K) and Queen Beds (Q) .Each King Bed costs $500 and requires 100 cubic feet of storage space,and each Queen Bed costs $300 and requires 90 cubic feet of storage space.The manager has $75,000 to invest in beds this week,and her warehouse has 18,000 cubic feet available for storage.Profit for each King Bed is $300,and for each Queen Bed is $150.What is the storage space constraint?

A) 100K - 90Q $\le$ 18,000
B) 90K + 100Q $\le$ 18,000
C) 300K + 90Q $\le$ 18,000
D) 500K + 100Q $\le$ 18,000
E) 100K + 90Q $\le$ 18,000