(@) Determine the number of rentals and the sales revenue Veronica needs to break even using the contribution margin technique. (b) If the current level of rentals is 3,000, by what percentage can rentals decrease before Veronica has to worry about having a net loss (Margin of Safety Rate)? (c) Veronica is considering upgrading the breakfast service to attract more business and increase prices. This will cost an additional $3.00 for food costs per person per night. Veronica feels she can increase the room rate to $65 per person per night. Determine the number of rentals and the sales revenue Veronica needs to break even if the changes are made