The Formylation of Methionine in Prokaryotes

Multiple Choice

The formylation of methionine in prokaryotes

A) depends on two different tRNAs, where methionine can be formylated when bound to one form and not the other.
B) depends on two different tRNAs, where methionine can be formylated when bound to either one.
C) depends on one tRNA, where methionine is formylated after binding.
D) takes place before methionine is bound to tRNA.