What Are the Predominant Interactions Between the 30S and 50S

What are the predominant interactions between the 30S and 50S subunits that allow the formation of the 70S ribosome?

A) 30S protein with 50S rRNA
B) 30S rRNA with 50S protein
C) protein-protein interactions from both subunits
D) rRNA-rRNA interactions from both subunits
E) interactions of 50S rRNA with tRNA D loop and interactions of 30S rRNA with anticodon loop are the only interactions holding the 70S ribosome together