Mr. Frengki intend to buy longan, longan he estimates the price of Rp. 6000.00 per kg. But when they wanted to buy longan prices were much more expensive at Rp. 10000.00 per kg, it was canceled. Based on the Pa Heri thirst subjectivity is the buyer ....
a. marginal
b. supermarginal
c. submarginal
d. potential
e. absolute