I had a brief , mild arrhythmia this morning , probably lasted about ten minutes . I went to enter it in my phone and realized that the previous entry was last December . Have I really not had any arrhythmias in over half a year ? That 's pretty awesome . I guess those ridiculously expensive meds really work .

Select from the following.
a). They started a new job ..
b). They had surgery to fix it ..
c). They take medicine to treat it ..
d). They are n't as stressed ..
Answer the following question: What may be the reason for going so long without an arrythmia ?
c).