Suppose Robinson Crusoe is stuck on an island without the wisdom and local knowledge of Friday. During a year, he catches 1,000 fish valued at $0.75 each. He eats 500 fish and trades 500 fish with a tribe on a nearby island who are willing to trade with him. He receives 80 pounds of bananas valued at 1.25 per pound. He also grows 200 pounds of potatoes valued at $2 per pound. He eats 150 pounds of potatoes and trades 50 pounds of potatoes with another tribe on the other side of the island. He receives 50 pounds of corn valued at $1 per pound. He makes one hut valued at $500 for housing. a. (20 points) What are consumption, investment, export, and import if there are zero government purchases? Consumption = Investment = Export = Import = b. (5 points) What is GDP