Arrange the steps of gene expression in the correct order:
1.) Initiation - as RNA polymerase attaches to the promoter
2.) Elongation - RNA grows longer
3.) Termination - RNA polymerase reaches the terminator, which signals the end of the gene
a) 3, 1, 2
b) 1, 3, 2
c) 2, 1, 3
d) 1, 2, 3
