The following paragraph is from an article titled, “Hydraulic Fracturing Overview:
Growth of the Process and Safe Drinking Water Concerns” in the March 1, 2012 issue of Congressional Digest:

The use of hydraulic fracturing continues to increase significantly, as more easily accessible oil and gas reservoirs have declined and companies move to develop unconventional oil and gas formations. Hydraulic fracturing is used for oil and/or gas production in all 33 U.S. states where oil and natural gas production takes place. According to industry estimates, hydraulic fracturing has been applied to more than 1 million wells nationwide.

State whether or not the following sentences have plagiarized the passage. If they did plagiarize the passage explain why it is plagiarism?
a. As of March 2012, hydraulic fracturing has been applied to more than 1 million wells nationwide.
b. Hydraulic fracturing has become more prevalent nationwide. More than one million wells have been created.
c. According to the Congressional Digest, more than one million wells in the United States use hydraulic fracturing