Select the correct answer. Which two statements are true about vertical farms?

1. Vertical farms refer to farms that grow plants that are more than 3 feet in height.
2. Vertical farms refer to skyscrapers with specific areas dedicated for food cultivation.
3. Vertical farms refer to farms in hilly areas.
4. Vertical farms reduce transportation costs from rural to urban areas.
5. Vertical farms refer to cops grown on walls of buildings.

A. only I
B. only II
C. only III
D. I and III
E. I and IV