This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Which of the following signs is classic for CT scanning in Graves ophthalmopathy: 
Select and explain. 
A. Nodular muscle enlargement, B. Solitary muscle enlargement, C. Fusiform muscle enlargement with sparing of tendoms, D. Kinking of extraocular muscles.
C: Fusiform muscle enlargement with sparing of tendoms
Answer: C: Fusiform muscle enlargement with sparing of tendoms 
Explanation: Ans. Fusiform muscle enlargement with sparing of tendoms