2. Name the comparative advantage theory that matches each of the following explanations of com parative advantage.

a. Differences in labor productivity among countries:

b.Theadvantagethatcomestoacountrythatisthe first todevelopandproducea product:

c. Therelativeamountsofskilledandunskilled labor inacountry:
d.Differences intheamountsofresourcescountries have:
e.Differences intasteswithinacountry: