Definition: You are given a question on clinical knowledge. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: Which of the following is true of Graves Disease of the thyroid?
(A)It is a cause of ophthalmoplegia (B)It causes a large multi-nodular goitre (C)It is commoner in males than females (D)In the past, Grave's disease sometimes caused 'Derbyshire Neck'

A