What Is the Correct Sequence in Creating a DNA Profile

Multiple Choice

What is the correct sequence in creating a DNA profile?

A) Collect sample->extract DNA->PCR to amplify STRs->gel electrophoresis->analyze gel
B) Collect sample->extract DNA-> gel electrophoresis->PCR to amplify STRs-> analyze gel
C) Collect sample->gel electrophoresis->extract DNA->PCR to amplify STRs->gel electrophoresis again->analyze gel
D) Collect sample->PCR to amplify sample->gel electrophoresis->extract DNA->gel electrophoresis again->analyze gel
E) PCR to amplify sample->extract DNA->gel electrophoresis->analyze gel