Read the following statements and identify the correct answer.
Statement A: The road density adopted for the Third Twenty-Year Road Plan is 64 km/100 km2.
Statement B: If the contour interval is 15 m and the ruling gradient is fixed as 1 in 20, the minimum road length between two consecutive contours is 300 m.
1
Statement A is correct and B is incorrect.
2
Statement A is incorrect and B is correct.
3
Both statements are correct.
4
Both statements are incorrect.