In the current year, Nighthawk Corporation, a calendar year C corporation, has $4,180,000 of adjusted taxable income and $125,400 of business Interest income. Nighthawk has no floor plan financing interest. The business Interest expense for the year is $1,672,000. a. Assume that Nighthawk has average gross receipts for the prior three-year period of $32,800,000. Determine Nighthawk's current-year deduction for business interest. b. Assume that Nighthawk has average gross receipts for the prior three-year period of $21,750,000 Determine Nighthawk's current-year deduction for business interest. (Previc