Q: In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.
Context: The Poor Pay More is a 1967 book published by David Caplovitz. It is a sociology study of what could be called the poverty penalty which is a concept that poor people pay more for the same goods and services as people with more money do.Esther Peterson cited the book as being important for understanding contemporary consumer problems.In 2010 a researcher cited the book as still being relevant.
Question: The document can be classified to which topic?
Options: 1)EducationalInstitution, 2)NaturalPlace, 3)WrittenWork, 4)Album, 5)Film
A:
3