Dr. Townes is a dentist practicing in Denver. during a four-day stretch in March, it snowed so heavily that not a single patient was able to visit him. Since none of his appointments took place, he did not make any money in those from days, eve though his normal expenses remained. In this scenario, which of the following characteristics of services if most likely affecting Dr. Townes' business?

A. perishability
B. separability
C. tangibility
D. profitability
E. homogeneity

Answer: A. perishability