Measure<br>John wanted to know how dogs could find electronic devices. He set up a test to measure the chemicals off-gassed by plastic. John used a sensitive device that could detect odors. He found plastic devices gave off a certain chemical as they decayed. John published his research in an esteemed science journal.

Based on that paragraph can we conclude that this sentence is true?
John was a college graduate

 (a). Yes; (b). It's impossible to say; (c). No;
(b).