When Average Cost Is "U-Shaped" (Neither Always Rising nor Always

Multiple Choice

When average cost is "u-shaped" (neither always rising nor always falling) , the marginal cost curve will

A) cross through (intersect) the average cost curve at its maximum.
B) not intersect with the average cost curve at all.
C) be a fixed distance above the average cost curve.
D) cross through (intersect) the average cost curve at its minimum.