Good Luck Keith

Tomorrow morning Keith is taking his Step 1 exam!  The step 1 exam is the first in a series of 3 medical licensing exams!  This is a very long exam- 8 hours!  Good Luck Keith!!!!

Here is an example of a test question I took from a question bank!  What do you think the answer is?  Post it in the comments section!:
A 49 year old man is found to have a solitary neck nodule on physical examination. Laboratory studies reveal an elevated calcitonin level and fine needle aspiration confirms a diagnosis of medullary carcinoma of the thyroid. Which of the following disease processes might the physician be concerned to look for in this patient?

A. Hyperparathyroidism
B. Papillary thyroid carcinoma
C. Pituitary adenoma
D. Subacute thyroiditis
E. Zollinger-Ellison syndrome