Question: The difference in the average flow time between shortest processing time and first-come-first-served is greatest when a. All of the jobs have the same processing

The difference in the average flow time between shortest processing time and first-come-first-served is greatest when 

a. All of the jobs have the same processing times. 

b. The utilization of the resource is low. 

c. There are many jobs waiting to be processed at the resource. 

d. Jobs arrive in increasing order of their processing times.

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