You are analyzing a project and have developed the following estimates. The depreciation is $2,500 a year and the tax rate is 35 percent. What is the lower bound operating cash flow? Lower Bound Upper Bound Unite Sales Base Case 1,800 $20 1,600 2,000 $18 $20 Price per unit Variable cost per unit $11 $9 $13 Fixed costs $7,000 $6,500 $7,500 O $6,855 O $6,010 O $7,324 O $6,984 O $7,767