The results of a particle size analysis of a soil are given in the following Table. No Atterberg limit tests were conducted. Sieve No. Percent finer 9.53 mm 100 No.4 89.8 No.10 No.20 62.5 70.2 No.40 No.100 No.200 28.6 4.1 49.8 a) Would you have conducted Atterberg limit tests on this soil? Justify your answer. b) Classify the soil according to USCS and AASHTO. c) Is this soil a good foundation material? Justify your answer