What are lo a. Consider a four-station line in which all stations consist of single machines. Station 2 has average processing times of two hours per job, while the remaining stations have average processing times of one hour per job. Answer the following, under the assumption that the process times are deterministic (as in the best case ). and T, for this line? b. How do r. and T, change if a second identical machine is added to station 2? What effects will this have on performance? c. How do r, and T, change if the machine at station 2 is speeded up to have average processing times of one hour? What effects will this have on performance? d. How do r. and T, change if a second identical machine is added to station 1? What effects will this have on performance