When Does the Small Ribosomal Subunit Bind to the Translational

When does the small ribosomal subunit bind to the translational complex in eukaryotic cells?

A) It is the first component to bind to the mRNA
B) After the initiator tRNA binds,but before the start codon has been found
C) After the large ribosomal subunit binds,but before the initiator tRNA binds
D) After the start codon has been found by initiator tRNA
E) The small ribosomal subunit binds the initiator tRNA and this complex is the first to bind to the mRNA