ABC Corporation Corporation's (a large manufacturing firm) gross profit margin is much larger than the other firms in the industry. Which of the following is the most likely explanation?
Firm A has a very old, very inefficient production facility.
Firm A faces a higher tax rate.
Firm A uses too much middle management.
Firm A is the only firm in the industry that does not offer a 2-year warranty on their product
Firm A has the only non-unionized workforce in the industry