This Graph, Which Is Based on Estimates from the International

This graph, which is based on estimates from the International Panel on Climate Change (IPCC) , shows that by 2100, global temperatures may rise as much as __________above average levels in 2000. The dashed data line represents a high growth of greenhouse gas, the dotted data line represents a moderate growth of greenhouse gas, and the square data line represents a substantially reduced growth of greenhouse gas.

A) 3°C
B) 2.5°C
C) nearly 4°C
D) 1°C
E) nearly 2°C