What is the output of the given statement?
* (defclass article() ((title :accessor article-title :initarg :title) (author :accessor article-author :initarg :author)))
* (defclass computer-article (article) ())
* (defclass business-article (article) ())
* (defclass political-article (article) ())
* (setf articles (list (make-instance ‘business-article :title “Memory Prices down”)))
a) Business article
b) Political article
c) Business article
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