Marine Isotope Stage 11 Is Important in Understanding Climate Change

Marine Isotope Stage 11 is important in understanding climate change because

A) CO₂ levels were much higher to todays,but temperatures were much lower.
B) CO₂ levels and Earth's orbital alignment were similar to today's.
C) Earth's orbital alignment was opposite to today's.
D) there is a written account of climate for the period.
E) CO₂ levels were much lower to todays,but temperatures were much higher.