If a currency increases in value in response to market forces, this process is known as

A marginal benefit curve

A) is the same as a demand curve. B) is the same as a supply curve. C) slopes upwards. D) is a vertical line at the efficient quantity. E) is U-shaped.

The output gap is zero when

A) Actual real GDP > Natural real GDP. B) Actual real GDP = Natural real GDP. C) Actual real GDP < Natural real GDP. D) Natural real GDP = 0.