What is the main difference between 2D cross-section estimation and 3D digital terrain modeling?

What is the main difference between 2D cross-section estimation and 3D digital terrain modeling?

• A. 2D uses a single cross-section; 3D uses multiple cross-sections.
• B. 3D models capture topography and volumes directly from a digital surface, reducing interpolation errors.
• C. 2D is more accurate.
• D. 3D cannot estimate volumes.

Answer: (B)