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: Biochemistry
True about genetic code: 
Select and explain. 
A. AUA codes for methionine in mitochondria, B. UGA codes for selenocysteine, C. AUG codes for initiator codon in mammalian cell and AGA & AGG act as chain terminator in mammalian mitochondria both, D. All
D: All
Answer: D: All 
Explanation: All