DNA Is Composed of Two Strands, Only One of Which

Multiple Choice

DNA is composed of two strands, only one of which is typically used as a template for RNA synthesis.By what mechanism is the correct strand chosen?

A) The promoter acts to direct the RNA polymerase.
B) Only one strand has a start codon.
C) Both strands are tried, and the one that works is remembered.
D) An initiation factor informs the system about which strand to use.
E) The strand chosen randomly.