Which of the following is NOT an appropriate flow unit to analyze the operations at a supermarket? Multiple Choice Number of cash registers Customers served Sales dollars Products sold Which of the following is NOT a rule used to define a flow unit? Multiple Choice A flow unit should correspond to what is tracked and measured in a process. A flow unit should be used to measure the number of resources in a process. A flow unit should be measured consistently in the same unit as which it is defined. A flow unit should be used to measure all activities within a process