When 2,000 Hamburgers a Day Are Produced,the Marginal Social Benefit

Multiple Choice

When 2,000 hamburgers a day are produced,the marginal social benefit from the 2000^th hamburger is $1.50 and its marginal social cost is $1.00.And when 7,500 hamburgers a day are produced,the marginal social benefit from the 2000^th hamburger is $1.00 and its marginal social cost is $1.50.The efficient quantity of hamburgers is ________ a day

A) less than 2,000
B) between 2,000 and 7,500
C) more than 7,500
D) zero
E) 2,000