A company surveyed all of the employees in their Columbus, Ohio office, one of their six national offices. Based on the survey they determined that 72% of all employees were satisfied with their job. Which of the following explains why this is NOT a random sample? * 1 point A. They only surveyed people who had been at their job for five years or more. D. The survey had a time limit C. The survey was conducted electronically B. They did not survey employees in other offices around the country.