A college football stadium holds a capacity of 100,000 people. The team is sponsoring a family day when tickets are $50 per person. The function f(n)=50n represents the amount of money the team will make on family day, where n represents the number of tickets sold. What is the domain of f(n) in this context?
A.) All positive rational numbers
B.) All whole numbers
C.) All whole numbers (less than or equal to) 100,00
D.) All whole numbers (less than or equal to) 2,000