A rendering plant is capable of producing 10 tons of product per day if run for three shifts with no breakdowns and plenty of raw materials. Over the past week, the plant has rendered an average of 7.3 tons per day because the third shift has devoted much of their time to preventive maintenance. What is the utilization of the plant?
A) 10 tons/day
B) 7.3 tons/day
C) 73%
D) 137%