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: Medicine
When hypothyroidism is caused by pituitary dysfunction (Central hypothyroidism), the following profile is present 
Select and explain. 
A. Goitre present, raised TSH, low T3, T4, B. No goitre, reduced TSH, low T3, T4, C. No goitre, raised TSH, low T3, T4, D. Goitre present, reduced TSH, low T3, T4
B: No goitre, reduced TSH, low T3, T4
Answer: B: No goitre, reduced TSH, low T3, T4 
Explanation: None