Ronnie operates a lawn-care service. On each day, the cost of mowing the first lawn is $10; the cost of mowing the second lawn is $12; and the cost of mowing the third lawn is $15. His producer surplus on the first three lawns of the day is $53. If Ronnie charges all customers the same price for lawn mowing, that price is ____.
(A) $25
(B) $30
(C) $36
(D) $45