A soil mapper drew a boundary around an area in which he made six randomly located auger borings, two in soil A, with an argillic horizon more than 60 cm thick and strong brown in color, and the other four in soil P. with a somewhat lighter brown argillic horizon between 50 and 70 cm thick. Other soil properties, as well as management considerations, were similar for the two types of soils. Would the map unit delineated likely be a a soil association, a soil consociation, or a soil complex? Explain.