Which of the following statements is correct? Group of answer choices An increase in unemployment shifts the economy further inside its production possibilities frontier. An increase in productivity moves the economy from inside the production possibilities frontier to the frontier itself. A reduction in unemployment shifts the entire production possibilities frontier outward. An increase in productivity shifts the economy from producing at a point on the production possibilities frontier to a point outside the production possibilities frontier. An increase in unemployment shifts the economy from a point outside the production possibilities frontier back to the production possibilities frontier