1)   Why is DNA replication required as a preliminary step of cell division?

a.    DNA is present in trace amounts in cells so the new daughter cells will receive at least a random piece of chromosome

b.    DNA is present in a diffuse state in cells only after replication

c.    Each of the two new cells will have a full set of chromosomes with genetic information to perform all cell functions

d.    DNA replication is not required in cell division

e.    Cells are immortalized and create tumors when DNA is replicated