Cultured Mammalian Cells Grown in Thymidine for Many Generations Were

Cultured mammalian cells grown in thymidine for many generations were allowed to undergo replication in the presence of bromodeoxyuridine (BrdU) ,which replaces thymidine in DNA.After one round of replication,what would the DNA look like if replication were dispersive?

A) All chromatids have one strand that contains BrdU and one strand that does not.
B) All chromatids have two strands that contain BrdU.
C) Half of the chromatids have two strands that contain BrdU and half of the chromatids have 2 strands lacking BrdU.
D) Both strands of each chromatid contain mixtures of BrdU and thymidine.
E) All chromatids lack BrdU.