During Translocation the Peptidyl-TRNA Present in the a Site of the Ribosome

Multiple Choice

During translocation the peptidyl-tRNA present in the A site of the ribosome is translocated to the P site,and the uncharged tRNA in the P site is translocated to the E site,as the ribosome moves three nucleotides toward the 3¢ end of the mRNA molecule.Which of the following soluble factors is required for this process to occur?

A) IF-1
B) EF-Tu
C) EF-G
D) IF-2
E) IF-3