9. If a pizza maker pays $1 for tomatoes, $1 for cheese, $2 for sausage, and sells the pizza made with these ingredients for $7, then each pizza sold contributes how much to GDP?
(A) $3
(B) $4
(C) $7
(D) $11

答案:登入後查看
統計: A(1), B(0), C(1), D(0), E(0) #2789743