Hi, I'm having problems answering the below question, any help will be appreciate it, thanks.

Consider the role of discount rates in problems involving long time horizons such as climate change. Suppose that a particular emissions abatement strategy would result in a $500 billion reduction in damages 50 years into the future. How would the maximum amount spent now to eliminate those damages change if the discount rate is 2% rather than 10%? * O The amount spent now would be greater when the discount rate is 10%. O The discount rate is irrelevant because we are only considering net costs not net benefits. O We cannot use net present value for long time horizons. The amount spent now would be greater when the discount rate is 2%