Short Chains of Nucleic Acid Can Be Isolated from Cells

Short chains of nucleic acid can be isolated from cells in which DNA is undergoing replication. These segments, known as Okazaki fragments, have which of the following properties?

A) They are double_stranded.
B) They are removed by nuclease activity.
C) They are DNA_RNA hybrids.
D) They arise from the nicking of the sugar_phosphate backbone of the parental DNA chain.
E) They contain covalently linked RNA and DNA.