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QUESTION 1 ECON2300 (Introductory Econometrics) uses the programming language R, which works with a number of R-packages. The package 'AER' has many datasets from leading applied econometrics journals and popular econometrics textbooks. Since some of the datasets included in 'AER' will be during the semester, you are required to add it to your R. Which of the following commands would allow you to get 'AER'? (Hint: just try one by one!) a. addon packages(AER) Ob. get package("AER") O C. install packages("AER") d. plugin.package(AER)