Problem 4: Cesar's Bottlers bottles soft drinks in a factory that can operate either one shift, two shifts, or three shifts per day. Each shift is eight hours long. The factory is closed on weekends. The sales price of $2 per case bottled and the variable cost of $0.9 per case remain constant regardless of volume. Cesar's Bottles can increase volume by opening and staffing additional shifts. The company has the following three choices: