You need to write a paper related to water conservation approaches in the United States. Which sources below would you consider as primary resources to support your paper?

A  a newsletter by the Deer Park bottled water company
a book chapter on water conservation in a book edited by an expert in biodiversity
Wikipedia Water Conservation

B  A web page on water conservation published by the Sierra Club. No author is listed.
a peer-reviewed journal article on water conservation published in 2009
a newsletter by the Deer Park bottled water company

C  a published textbook written by a professional water conservationist
a peer-reviewed journal article on water conservation published in 2009
a book chapter on water conservation in a book edited by an expert in biodiversity

D  a vlog by a water conservation activist
a relevant article written by the mayor of a large US metropolitan city
A web page on water conservation published by the Sierra Club. No author is listed.