In the design and construction of cornhole boards, what specific dimension is critical to ensure the boards meet official standards for competitive play?
A. The board's height must be exactly 24 inches from the ground.
B. The board's width must be 36 inches, and the length must be 48 inches.
C. The board's thickness should be between 1.5 and 2 inches to provide proper durability and gameplay experience.
D. The board's surface should be coated with a non-slip material to enhance the grip of the cornhole bags.