Which statement is NOT accurate regarding soil structure and percolation testing?

Which statement is NOT accurate regarding soil structure and percolation testing?

• A. Single grain structure is described as structureless and occurs only in sand
• B. Granular structure is associated with O, A, and AP horizons
• C. Averages of percolation test rates across the site are permitted
• D. The percolation rate is expressed in minutes per inch

Answer: (C)