Suppose that company Xrents spaces for companies Y and Z. The price and cost characteristics for each are as follows (one unit is a space rented for one day): Price per unit Variable cost per unit Units rented per year Y space $ 12 $6 10,000 Z space $ 30 $ 14 5,000 The fixed costs of company X are $120,000 annually. Assuming the mix of Y and Z spaces is the same as the current mix, how many Y and Z spaces must be rented annually for company X to break even? (round your answers so we have integer values) Select one: O a. 3.600 of Z and 2,400 of Y Ob 8571 Of Y 4286 of Z . 7.200 of Y and 4800 of Z O d. 8571 f Z 4286 of Y e 8,000 of Z and 4,000 of Y 8,000 of Y and 4,000 of Z