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: Pharmacology
L-thyroxine can be given safely in cases of 
Select and explain. 
A. Hypothyroidism, B. Hyperthyroidism, C. Hashimoto's disease, D. Graves' disease
A: Hypothyroidism
Answer: A: Hypothyroidism 
Explanation: None