Which of the Following Is a Principle of Network Theory

Which of the following is a principle of network theory? Select all, but only those that apply.

A) There are symmetrical ties between individuals that must be analyzed according to the structure of larger networks.
B) Social ties form nonrandom networks that cluster.
C) There are cross-linkages between both individuals and network clusters.
D) The unequal distribution of scarce resources create competition, conflict as well as collaboration and competition.