Two gravel road cross-sections are shown in Figures A and B. Identify the type of gravel road cross-sections.
1
A-Trench type and B-Feather type
2
Both are Trench type
3
Both are Feather type
4
A-Feather type and B-Trench type
Two gravel road cross-sections are shown in Figures A and B. Identify the type of gravel road cross-sections.