Match each of the following costs with the graph that best portrays its cost behavior as the number of units produced and sold increases Graph 1 Graph 2 Graph 3 Grach 4 EET Activity Base Activity Base Activity Base Activity Base Graph 5 Activity Base Clear All Per-unit cost of plant superintendent's salary Graph 1 Salary of the night-time security guard of $3,800 per month Graph 4 Activity Base Clear All Per-unit cost of plant superintendent's salary Graph 1 Salary of the night-time security guard of $3,800 per month Graph 4 Repairs and maintenance costs of $3,000 for each 2,000 hours of factory machine usage Graph 5 Total direct labor cost Graph 3 Straight-line depreciation on factory equipment Graph 2