The Wedding Show attracted 600 guests with each guest paying $45 for admission. One tenth of the guests were seniors who received a discount of 20%. The show also featured 25 trade booths that contained sponsors who paid $500 for their booth. The concession stand served a luncheon buffet at $20 each and 30% of the guests purchased a buffet. The Fun Photo booth charged $5 for a photo and exactly half of the guests purchased a photo. The venue rental cost $5,000. What was the sponsorship revenue for the event?

a) $53,060

b) $33,300

c) $20.830

d) $12,500

e) $ 9,500