The President of the United States Promises That the Nation's

The president of the United States promises that the nation's economy will simultaneously produce more defense goods without any decreases in the production of other goods. Under which of the following conditions could such a promise be valid?

A) If the United States were producing at a point on its production possibilities curve
B) If the United States were producing inside its production possibilities curve
C) If the United States were producing to the right of its production possibilities curve
D) None of the above; the production possibilities curve must shift to the right.