Why Does the MRNA Adopt a Sharp Bend as It

Why does the mRNA adopt a sharp bend as it moves through the ribosome?

A) so that the mRNA can enter the 30S subunit and exit the 50S subunit
B) in order to maximize base pairing with the 23S rRNA
C) so the tRNAs in both the A and P site can interact with their appropriate codons
D) to prevent dissociation of the 30S and 50S subunits
E) all of the above