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: Physiology
Which of the following would you expect to find in a patient whose diet has been low in cakcium for 8 weeks? 
Select and explain. 
A. Increased phosphate levels, B. Raised calcitonin levels, C. Increased parathormone secretion, D. Activation of 24-25 dihydrocholecalciferol
C: Increased parathormone secretion
Answer: C: Increased parathormone secretion 
Explanation: C i.e. Increased Parathormone secretion