$1)(2$ pts$)$ Read the following paper:

Prencipe, L$.$ P$.,$ Colovic, A$.,$ Binetti, M$.,$ & Ottomanelli, M$.(2024).$ Zero$-$emission vehicle adoption towards sustainable e$-$grocery last$-$mile delivery. Research in Transportation Economics, $104,101429.$

a$)$ What is the research contribution of this paper? i$.$e$.$ what innovation does this paper add to the literature?

b$)$ Consider the system design problem they study $($don$$t worry about the model$).$ If we were to adopt their proposed system in NYC$,$ what would be the benchmark system to compare against? What are the parameters you would need to collect data for in the benchmark system? Be sure to reference your sources in supporting your points.