Clay Soils Will Usually Have a Higher Cation Exchange Capacity

Multiple Choice

Clay soils will usually have a higher cation exchange capacity than sandy soils because

A) clay particles have round surfaces that reduce surface area where positively charged particles can accumulate.
B) clay particles have round surfaces that reduce surface area where negatively charged particles can accumulate.
C) clay particles have elongated surfaces that support negative charges.
D) clay particles have elongated surfaces that support positive charges.