(2.69) Laboratory testing was performed on two soil samples (A and B) and the data is summarized in the table.

Determine the USCS classification for samples A and B. Use log interpolation as necessary. Particle size analysis and Atterberg limits wereperformed for Soils C and D. Results are givenin the following table.

Classify Soils C and D according to theAASHTO system. [2 pts.]