What Was the Intention of Five Major Producing Countries-Iraq, Iran

What was the intention of five major producing countries-Iraq, Iran, Kuwait, Saudi Arabia, and Venezuela-in the founding of the Organization of Petroleum Exporting Countries (OPEC) in 1960?

A) To assert economic independence
B) To utilize the collective-bargaining power of its member states in order to pressure the Western oil companies to increase oil prices
C) To gain a greater measure of control over pricing policies
D) All of the answers are correct