1. The college bookstore provides vital services that are critical to students, especially during book purchasing period. The bookstore manager can offer services for up to four separate cash registers and would like to determine how many of these it should operate during the book buying season. In order to help the manager, please complete the following table assuming 20 customers per shift, $5/per customer idle cost, and $100 per register cost to the store. 1 3. 4. Avg customers per shift II Average wait (minutes)per 30 20 10 customer II Time value per shift (Ix II) IV Customer idle Cost V Customer Wait cost (IIIXIV) VI Store cost 100 200 300 400 ($100/register number lines) VII (V+VI) Total Cost A. What is the cost to operate 1 register? B. What is the cost for 3 registers? C. Ultimately, how many registers should the store keep open during the key book buying season?