The correct answer is<span> D.In all his businesses, Rockefeller made sure that he controlled all aspects of production.
What he did for example for oil was control all things relevant for oil such as rigs, refinement, transportation, gas stations, roads, all kinds of similar things. This way nobody could bother him in any way and he could dictate the prices and the market. </span>
Answer:
D
Explanation:
interest rate per compounding period ; number of compounding periods