Restriction Enzymes Are Especially Useful for Genetic Recombination Work for All

Multiple Choice

Restriction enzymes are especially useful for genetic recombination work for all of the following reasons, except :

A) They cut DNA in the middle of specific sequences.
B) They cut DNA independent of the source of the DNA.
C) They often generate single stranded tails or "sticky ends".
D) There are a large variety of them commercially available.
E) All of these traits make restriction enzymes useful.