Q. 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