Farmer John has a pistachio farm. It takes him 5 hours worth of work to harvest 1 pound of nuts. Farmer Rick also has a pistachio farm. It takes him 10 hours worth of work to harvest 1 pound of nuts. Finally, Farmer Erica owns a third pistachio farm. She can harvest 1 pound of nuts in 2 hours. Who has the absolute advantage in this example?

a)Farmer Erica

b)Farmer Rick

c)Farmer John

d)Unclear