[請益] 一題無異曲線的題目
A real-world example of two products that exhibit vertical differentiation is
(A) Coke and Pepsi
(B) Peanut butter and jelly
(C) Orange juice and lemonade
(D) Starbuck's coffee and a grocery store's generic brand of coffee
想請問一下 為什麼答案是B
謝謝
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