McAuliffe Found Middle to Late Pleistocene Soils of the Sonoran

Multiple Choice

McAuliffe found middle to late Pleistocene soils of the Sonoran Desert, which formed hundreds of thousands of years ago, were characterized by

A) a well-developed B horizon.
B) high amounts of clay.
C) a well-developed caliche layer.
D) a well-developed argillic horizon.
E) All of the choices are correct.