A landscaping company estimates the price of the job, in dollars, using the expression 60 + 12nh, where n is the number of landscapers will be working and h is the total number of hours the job will take using n landscapers. Which if the following is the best interpretation of the number 12 in the expression?

minimum of 12 landscaperswill work on each job.

The price of every job increases by $12 every hours.

The company charges $12 per hour for each landscaper.

Each landscaper works 12 hours a day.