The nurse meets with patients who quit smoking, or are planning to quit. Which statement made by a ...

The nurse meets with patients who quit smoking, or are planning to quit. Which statement made by a patient would lead the nurse to conclude that that patient is in the maintenance stage of change?
 
  a. I haven't smoked in 2 weeks, but I have to constantly resist the urge to light a cigarette.
  b. I don't even think about cigarettes anymore. I really don't miss smoking.
  c. Each day I don't smoke, I put money that I would have spent in a jar to pay for a vacation.
  d. I am chewing gum and eating carrot sticks to keep myself from lighting a cigarette.