Witness manufacturing produces two types of cameras: 35mm and digital. the cameras are produced using one continuous process. four activities have been identified: machining, setups, receiving, and packing. resource drivers have been used to assign costs to each activity. the overhead activities, their costs, and the other related data are as follows: product machine hours setups receiving orders packing orders 35mm 12,000 200 300 500 digital 12,000 450 1,200 2,500 costs $70,000 $50,000 $10,000 $30,000 calculate the total overhead assigned to the 35mm cameras, using only machine hours to calculate a plantwide rate. (note: round the plantwide rate to two decimal places.) a.$60,200 b.$72,333 c.$75,130