Why Is It Risky for Companies to Invest in Renewable

Why is it risky for companies to invest in renewable energy?

A) Pricing for renewable energy resources are artificially low.
B) None of the known renewable energy resources are reliable.
C) Renewable energy is expected to fall out of favor with the American public in the next decade.
D) Subsidies and tax breaks have to be renewed by the government every few years.
E) The energy net yield is often low and changes yearly.