Which of the sentences below show the narrator is conscientious about the environment?
A. "So I ran across the field in my sandals, towards these great
gracefully spinning towers ..."
B. "Finally I stood still, listening to the barely audible whoosh-
whoosh-whoosh from the propellers ...
Х
C. "It's on private property, surrounded by fields that were growing
dark under the sunset and rising moon."
D. "I drove (guiltily, I'll admit!) up to the Colorado/Wyoming border,
where there's a small wind farm."