Two TRNA Molecules Occupy the P and a Sites in a Ribosome

Multiple Choice

Two tRNA molecules occupy the P and A sites in a ribosome. The amino acids they carry are joined by a peptide bond. What is the very next event that occurs?

A) The tRNA in the P site detaches and leaves the ribosome.
B) A third tRNA enters the ribosome.
C) The ribosome moves one codon down the mRNA.
D) The large subunit leaves the ribosome.
E) A new amino acid is joined to the tRNA in the P site.