James Ronan Was a 58-Year-Old Employee at an Office Supply

James Ronan was a 58-year-old employee at an office supply store that was acquired by Staple's.  After the acquisition, many of the Staple's employees were young and were put in most of the management positions.  Over a two-year period, Ronan's managers often referred to him as "old guy", "old coot", and "old goat".  He was told that the goal was to get him and other older employees out because of their higher wages and more costly benefit packages.  Finally, Ronan had enough and quit his job.  He filed suit against Staple's.  Which of the following is correct?​

A) Ronan does not have an ADEA case based on comments.
B) Ronan does have an ADEA case because he was treated differently on the basis of age.
C) Ronan does not have an ADEA case because the issue was his pay and benefits cost, not his age.
D) Ronan does not have an ADEA case because he quit voluntarily and was not fired due to his age.