What Does the Term "Peak Oil" Refer To

Multiple Choice

What does the term "Peak Oil" refer to?

A) the time period during which the rate of oil use is highest
B) the point in time at which the maximum amount of oil is being pumped from underground
C) an environmentally friendly synthetic oil with much lower greenhouse gas emissions than conventional oil
D) the time period during which oil refineries operate at their highest capacity
E) the time period during which international economies based on petroleum products arose