Why Does DNA Synthesis Proceed in a 5′ to 3′

Why does DNA synthesis proceed in a 5′ to 3′ direction?

A) DNA polymerases can only add nucleotides to the 3′ end of a polynucleotide strand.
B) The 3′ end of the polynucleotide molecule contains more phosphates than the 5′ end.
C) DNA unzips in the 5¢ to 3¢ direction.
D) DNA strands are parallel to each other.
E) Chromosomes are aligned in the 5′ to 3′ direction in the nucleus.