Martha Routinely Has Her Prescriptions Filled at Her Local SVC

Martha routinely has her prescriptions filled at her local SVC pharmacy. Each time that Martha goes to pick up a prescription, there is some problem and Martha has to return to the pharmacy later to get the prescription. Martha finds these return trips very annoying and time-consuming, but continues to request that her doctor send her prescriptions to this pharmacy even though there are several other options in her town. Which of the following is correct?

A) Economists would say that Martha is behaving rationally.
B) Martha's behavior appears to exhibit inertib.
C) Martha's behavior is inconsistent over time.
D) Martha gives too much weight to a small number of vivid observations.