Why Have So Many People Been Convicted of Crimes They

Why have so many people been convicted of crimes they didn't commit based on eyewitness identification?

A) No one has ever been convicted of a crime based on faulty eyewitness identification.
B) Eyewitnesses are often paid off by the prosecution or threatened by police to help gain a conviction.
C) Eyewitnesses can overlook facial features of people of different races, transfer memories of people from different settings, or have poor recall due to stress.
D) Judges allow prosecutors to find people with a grudge against a defendant to serve as eyewitnesses.