Why Would DNA Synthesis Occur in Both Directions from an Origin

Multiple Choice

Why would DNA synthesis occur in both directions from an origin of replication?

A) DNA is a double helix and DNA synthesis is 5' to 3'.
B) Replication- associated proteins bind at two replication forks.
C) It allows DNA strands to overlap when reaching another origin of replication.
D) Leading strands extend from one side of the origin while lagging strand extends from the other side of the origin.
E) DNA direction synthesis is random and sometimes extends in one direction from an origin of replication and sometimes in the other direction.