What is the purpose of the Module#attr_reader, Module#attr_writer, and Module#attr_accessor methods in Ruby?
A. They define getter, setter, and both getter and setter methods for instance variables respectively
B. They define methods for reading, writing, and both reading and writing instance variables respectively
C. They define methods for reading instance variables, writing class variables, and both respectively
D. They define methods for reading, writing, and both reading and writing class variables respectively
Answer: Option A
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