问题:
[单选题]Clinicians and researchers still" debate" whether excessive use of cellphones or other technology can constitute an addiction. It wasn’t included in the latest update to the DSM-5, the American Psychiatric Association's definitive guide for classifying and diagnosing mental disorders. But given the ongoing debate, "we decided to see if phantom buzzes and rings could shed some light on the issue." What can we know from the quatation mark parts?
APhantom buzzes caused the debate between researchers.
BThe researchers are not sure about the addition.
CPhantom buzzes may provide researchers with some evidence on this issue.
DThe researchers decided to study mental disorders.