career and wants to advance to higher level of management. Maria knows that is important to show efficiency as a server, having higher than average sale per server. This ratio is computed by Select one: a. Total sales a server is responsible for in a period of time (day, week, month) divided by number of seats in a restaurant b. Dividing total sales Maria makes in a shift by number of guests she serves in a shift c. Dividing total shift sales by number of servers working in that shift d. Dividing number of guests served in a shift by average guest check