What Is the Requirement for a Radiolabeled DNA or RNA

Multiple Choice

What is the requirement for a radiolabeled DNA or RNA molecule (i.e.,a probe) to hybridize to a section of DNA?

A) Both strands must contain a primer.
B) A cloning vector must be present.
C) The strands must have the same bacterial origin.
D) The strands must have complementary sequences.
E) The strands must have identical sequences.