Blood Sample |
Clumping with Anti-Serum A |
Clumping with Anti-Serum B |
RH |
Blood Type |
Blood Found at Scene |
No clumping.
|
Yes clumping.
|
Positive
|
B+
|
Anna Garcia |
No clumping.
|
Yes clumping.
|
Positive
|
B+
|
Alex Garcia |
No clumping.
|
Yes clumping.
|
Positive
|
B+
|
Doug Greene |
No clumping.
|
No clumping.
|
Positive
|
O+
|
Erica Piedmont |
No clumping.
|
Yes clumping.
|
Negative
|
B-
|
Lucy Leffingwell |
No clumping.
|
No clumping.
|
Negative
|
O-
|
Whose blood?
Anna Garcia and Alex Garcia both have blood type B+ which matches the the blood found at the crime scene, therefore, the blood found at the crime scene either belongs to Anna Garcia, Alex Garcia, or, possibly, both.