Answer : Option CExplaination / Solution:
flexible exchange-rate system is a monetary system that allows the exchange rate to be determined by supply and demand.As it variates according to market forces.
Answer : Option AExplaination / Solution:
It reflects that as the output of good X is increased,the output of goodY is decreasing. Therefore the shape of ppc becomes concave to the origin. The slope of ppc shows increasing moc which tends to rise when resources are shifted from the production of one good to another .