1- Explain the following statement

"There are no long-term fixed costs; all costs are variable. "

2- Which of the following are short-term adjustments and which are long-term adjustments?

a Wendy's builds a new restaurant.

b. Harley-Davidson Corporation hires 200 more production workers.

c. A farmer increases the amount of fertilizer he uses in his corn crop.

d. An Alcoa aluminum plant adds a third shift of workers.