In semiconservative DNA replication,each new double helix formed will have

A)three new strands in one helix and three old strands in the second helix.
B)one new strand and one old strand in each helix.
C)two new strands and two old strands in each helix.
D)two new and one old strand in one helix and two old and one new in the second helix.
E)only new strands in each helix.