An Internal Economy Means That ________,While an External Economy Means

Multiple Choice

An internal economy means that ________,while an external economy means that ________.

A) firm costs fall as firm output increases, firm costs fall as industry output increases
B) firm costs fall as industry output increases, firm costs fall as firm output increases
C) firm costs fall as firm output increases, firm costs rise as industry output increases
D) firm costs fall as industry output increases, firm costs rise as firm output increases