During initiation of translation the initiator tRNA is placed in the P site leaving the A site open. Which of the following statements does not explain why it is important to leave site A available?a. It is necessary to leave room for the second amino-acyl tRNA to occupy site A. b. It is necessary for the proper assembly of the ribosome. c. It is necessary because new peptide bonds form between the amino adds of the tRNA in P and the incoming amino-acyl tRNA in site A. d. It is necessary because codons in the mRNA are read in the A site