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: Unknown
True regarding sick euthyroid syndrome 
Select and explain. 
A. Normal TSH, T3 , T4 level, B. Normal TSH, low T3, normal T4 level, C. High TSH, low T3, low T4 level, D. High TSH, low T3, high T4 level.
B: Normal TSH, low T3, normal T4 level
Answer: B: Normal TSH, low T3, normal T4 level 
Explanation: Hormone level in sick euthyroid syndrome usually of

Low T3 , nomal T4 , TSH – low T3 syndrome
Low T3, low T4 , normal TSH – low T4 syndrome- severe cases