Which of the following two-word items mean the same thing?

Which of the following two-word items mean the same thing?

Q. Which of the following two-word items mean the same thing?

A.            Blood cancer – Haemophilia

B.            Pacemaker – S A Node

C.            Osteoporosis – arthritis

D.            None of the above

Answer: Pacemaker – S A Node

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