Vinnie is looking for an apartment in Dayton,Ohio.In Dayton,75% of the two bedroom,one bath apartments are $800 a month and 25% are $600.The marginal cost of his search increases by $15 per search,i.e. ,the marginal cost of looking at the first apartment is $15,the marginal cost of looking at the second apartment is $30,the marginal cost of looking at the third apartment is $45 and so on.
At most,Vinnie will be willing to look at _____ apartments.
A) 4
B) 3
C) 2
D) 1