Look at the graph that shows the progress made in reducing fuel cell system costs. Which conclusion is supported by the information in the graph?
The cost of producing a kilowatt of power with a fuel cell will be less than $30 in 2015.
Fuel cell cars are unlikely to be affordable in the near future.
The rate of emissions is decreasing because of inexpensive fuel cell technology,
The environment is unlikely to improve as a result of cheap fuel cell technology,