"Getting" and "Making" a Tip (From Dishing It Out: Power

"Getting" and "Making" a Tip (from Dishing It Out: Power and Resistance among Waitresses in a New Jersey Restaurant) GRETA FOFF PAULES c
-Paules's argument attributes waitresses' success in getting larger tips to:

A) treating the customers with courtesy and friendliness
B) flirting with customers and appearing to be very familiar with complete strangers
C) serving as many customers as possible in a given shift
D) providing an image of someone who really needs the tip and will spend the money sensibly
E) None of the above. It is almost entirely a matter of competence and hard work