The Netherlands plan to offer 55 million euro ($48 million) to Poland to build wind turbines to help reduce the country's dependence on air-polluting coal energy, the Polish environment ministry said yesterday. . . . Poland, expected to join the EU around 2004, has asked the Union for leniency on environmental issues . . . The formerly communist country's smokestack industries can seldom afford costly environmental investments. ––Reuters News Service, May 22, 2001

From the information in this news story, you can conclude that
a.
Poland needs economic help to solve its pollution problem.
b.
Using wind turbines for energy can reduce pollution.
c.
Producing clean energy can be expensive.
d.
all of the above