5. Sam produces cookies. His production cost is $4 per dozen. He sells the cookies for $10 per dozen. His producer surplus is
(A) $4 per dozen
(B) $6 per dozen
(C) $10 per dozen
(D) $14 per dozen

答案:登入後查看
統計: A(0), B(1), C(0), D(0), E(0) #2789585