Forensic DNA Typing Often Involves Recovery of Very Tiny Amounts

Multiple Choice

Forensic DNA typing often involves recovery of very tiny amounts of DNA from a crime scene. What is a major concern in analyzing this DNA?

A) There is rarely enough DNA to allow PCR amplification.
B) Even with these minute amounts of DNA, there still may be too much DNA for efficient PCR.
C) It is important to avoid the introduction of contaminating human DNA into the sample.
D) Suspects may refuse to provide a sample of their DNA.