Which of the Following Describes the Direction in Which Nucleotides

Multiple Choice

Which of the following describes the direction in which nucleotides are added onto a growing DNA strand during DNA replication in cells?

A) in the 3' - 5' direction for the leading strand, and the 5' - 3' direction on the lagging strand
B) in the 5' - 3' direction only
C) in the 5' - 3' direction for the leading strand, and the 3' - 5' direction on the lagging strand
D) in either the 5' - 3' direction or the 3' - 5' direction on both strands, depending on where replication begins