Shakespeare was the world's greatest playwright, which means that he must have written the world's greatest plays. The fact that he wrote the greatest plays in the world only goes to prove that he is the world's greatest playwright.
Which of the following statements best matches the argument shown above?

A) Dr. Smith is the only member of the twenty-strong English department who thinks that Byron wrote greater poetry than Keats. Therefore Byron was not as good a poet as Keats was.
B) A miscarriage of justice occurs when an innocent person is sent to prison. However, there are no miscarriages of justice because people in prison are guilty. Otherwise they would not have been sent to prison.
C) The presence of enlargened white corpuscles in the blood would indicate that the patient must be suffering from disease X. However, his blood sample contains no enlargened white corpuscles, so he cannot be suffering from disease X.
D) Blair denies having committed the robbery, but has implicated Brown. Brown on the other hand, claims that he was elsewhere at the time, and points the finger squarely back at Blair.
E) I believe that the presence of the tartar sauce helps to accentuate the flavour of the other ingredients, but they in turn release chemicals which tend to neutralise the tartar sauce. Therefore the dish is much less spicy than pure tartar sauce would be.
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The answer B

Circular arguments take the form "Fact A proves fact B. Fact B proves fact A."

I would go for C as well.
What is OA?

My Answer is C