Question 2: a) Emergency Response Center (ERC) considers using motorcycles right after an earthquake in order to have an idea about the status of districts in Bakrky after the earthquake within 2 hour time. According to plan, each node should be visited by a motorcycle right after the earthquake. Assume the motorcycles are located in ERC (node #1 of the data set) and they can travel 30 km/h on the average. Find the minimum number of motorcycles to be used. Report the routes for each motorcycle. b) Now conduct a sensitivity analysis on part a. Decrease the total visit time from 2 hours to 1 hour with increments 0.25 hrs. Note the # of motorcycles required for each step. c) Now we want to relocate the ERC. Among the distribution centers that you open in Q1 part a, where do you move ERC. Use the number of motorcycles that you have found in part a. d) Now assume we can locate the motorcycles in more than one DC's. (Still you will choose the motorcycle locations from Q1 part a) How many motorcycles should locate in which DC's, in order to visit all districts in 1 hour this time?