Multiple Choice Question (MCQ)

Question: What is the curvature of earth correction?
A. 0.1785D<sup>2</sup>
B. 0.0857D<sup>2</sup>
C. 0.0785D<sup>2</sup>
D. 0.0787D<sup>2</sup>
Correct Answer: 0.0785D<sup>2</sup>