According to Martin Weitzman, Uncertainty in Global Warming Science

According to Martin Weitzman, uncertainty in global warming science:

A) merits a "wait-and-see" approach from policy makers.
B) means policy makers should be especially concerned about stopping global warming.
C) justifies ignoring global warming and concentrating on more certain problems.
D) means that the private markets, especially financial and insurance markets, can deal with this issue better than government policy makers.