Which of the Following Best Describes What Occurs Along a Bowed-Out

Multiple Choice

Which of the following best describes what occurs along a bowed-out production possibilities curve?

A) The opportunity cost of production of a good rises as its output increases.
B) Resources can be transferred from one productive activity to another without requiring a sacrifice.
C) The opportunity cost of production of a good is zero.
D) The opportunity cost of production of a good falls as its output increases.