Which of the Following Is True of Average Fixed Costs

Which of the following is true of average fixed costs in the long run?

A) Average fixed costs start increasing.
B) Average fixed costs are above average variable costs.
C) There are no fixed costs in the long run, so there are also no average fixed costs in the long run.
D) Average fixed costs intersect the marginal cost curve at its minimum point.
E) a and b.