The world price of pens is $2.00. Suppose the pre-trade price of pens in Vietnam is $1.50. What would happen if Vietnam allowed trade in pens? A. Vietnam would import pens, and the price of pens in vietnam would be 2 dollars B. Vietnam would import pens, and the price of pens in vietnam would be 1.50 c. Vietnam would export pens, and the price of pens in vietnam would be 2.00 D. Vietnam would export pens, and the price of pens in vietnam would be 1.50