Tina Had a Hard First Week in Her Stressful Job

Tina had a hard first week in her stressful job. In subsequent weeks, she learned to cope with the pressure; now, however, she has begun to suffer from stress-related illnesses. According to Selye's general adaptation syndrome, why is this happening to Tina?

A) Selye's model does not address this situation.
B) Tina never actually learned to cope with the pressure.
C) Tina's body's ability to cope with the pressure is getting exhausted.
D) The illnesses began during the first week, but the symptoms were masked.