What Characterizes Relations Between Pastoralists and Neighboring Peoples

What characterizes relations between pastoralists and neighboring peoples?

A) pastoralists typically form trade links with foragers,horticulturalists or farmers to obtain food and other goods that they cannot produce themselves
B) pastoralists are in constant conflict with agriculturalists as the pastures of herders are often appropriated by farmers for fields
C) pastoralists are often in conflict with foragers as the latter often hunt their herd animals
D) pastoralists produce all that they need,but maintain generally friendly relations with foragers,horticulturalists and farmers
E) pastoralism is a short-term strategy used by agriculturalists in times of drought