Approximately Two Decades After a "Baby Boom," One Could Expect

Approximately two decades after a "baby boom," one could expect:

A) ​production to change from an interior point to a point along the production possibilities curve.
B) ​a movement along the production possibilities curve from one point to another.
C) ​an outward shift of the production possibilities curve along both axes.
D) ​an inward shift of the production possibilities curve.