It Takes Mom 30 Minutes to Cook Dinner

Multiple Choice

It takes Mom 30 minutes to cook dinner. In the same time, she can iron 6 shirts. Dad takes an hour to cook dinner and 30 minutes to iron a single shirt.

A) Dad has an absolute advantage in cooking.
B) Mom should cook dinner and iron; trade is impossible.
C) Dad has an absolute advantage in ironing shirts.
D) Dad should cook dinner; the opportunity cost is only 2 shirts.
E) Dad should cook dinner; the opportunity cost is only 1 shirt.