What is the most accurate statement about employers using Google and social media sites to screen job candidates?

Employers rarely use Google or social media sites to screen job candidates because these tools are not effective.

Many employers use Google or social media sites to screen candidates, but very few report finding information that impacts their decision about a candidate.

In one recent study, nearly half of the employers who used Google or social media to screen candidates indicated that they occasionally found information that kept them from interviewing or hiring a candidate.

It is illegal for employers to use Google and social media sites to screen job candidates.