The statement refers to "the advertising journal Printer's Ink" as the source of its content (using "according to"). Then, the information it contains is not a personal opinion or common sense assumption, therefore it is not subjective.
Using the journal as the source of the information makes the statement credible, as anyone can verify it doing a research, which is one definition of an objective statement.
Finally, the statement can be accurately described by C.It is objective because the information contained in this statement can be proven.