The graph below shows the amount of CO2 (carbon dioxide) in the atmosphere throughout Earth’s history. Which of the following claims is supported by the evidence in this graph?

A
The amount of CO2 in the atmosphere is currently decreasing at an extremely fast rate.

B
High amounts of CO2 in the atmosphere correspond to cold periods in Earth’s history, called ice ages.

C
The amount of CO2 in the atmosphere in 2018 was significantly higher than any other time in the past 800,000 years.

D
The amount of CO2 in the atmosphere from 1800 to 2018 increased at a slower rate than at any other point in the past 800,000 years.