Cougs' Mart, a campus grocery store, is considering adding a sandwich shop inside the store. Which of the following should be considered incremental cash flows of the sandwich shop project?

I. hiring additional employees to handle the work in the sandwich shop

II. utilizing an empty corner space owned by the Cougs' Mart to host the sandwich shop

III. research fees spent on analyzing campus demand for the sandwich food

IV. increased grocery sales due to new customers attracted by the sandwich shop

A. I only

B. I and IV only

C. I, II and IV only

D. II, III and IV only

E. I, II, III and IV