A university is planning to hold an event at a local venue, which will charge a fixed rental fee of $615 for the event plus $16.40 per guest for food.The university has budgeted $860 for administrative and marketing expenses.It plans to hire a band, which will cost another $450.Tickets are expected to sell for $39.80 per guest.Ignore taxes.What is the degree of operating leverage if 247 guests attend?

options:

a-1.39

b-1.42

c-1.46

d-1.50

e-1.54