Subject: mathqa
Question: when greenville state university decided to move its fine arts collection to a new library , it had to package the collection in 20 - inch by 20 - inch by 15 - inch boxes . if the university pays $ 0.60 for every box , and if the university needs 3.06 million cubic inches to package the collection , what is the minimum amount the university must spend on boxes ?
Option: 
A: $ 1,250
B: $ 2,550
C: $ 510
D: $ 306
Answer: D