A company rents a building with a total of 62,000 square feet, which are evenly divided between two floors. The total monthly rent for the building is $48,000. The company allocates $32,000 of total rent expense to the first floor and $16,000 of total rent expense to the second floor. How much of the monthly rental expense should be allocated to a department that occupies 12,400 square feet on the first floor?

a) 12,800

b) 8,000

c) 4,800

d) 6,400

e) 3,200