The code is from r studio

a. The following block of code was used to recode some of the key variables that you will use in this problem set. In your own words, describe how the recode() function works. What is the first argument? What are the subsequent arguments? Note: you do NOT need to run this code. Your task is to interpret it. d = d %>% rename age = AGEP commute_time = JWMNP ) %>% mutate employment_status = recode ESR, Civilian employed, at work, *2 = 'Civilian employed, with a job but not at work', 3' = 'Unemployed', 1 4 = 'Armed forces, at work, *5' = 'Armed forces, with a job but not at work', -6= 'Not in labor force ), means_of_transport - recode JWTRNS, -01" = Car, truck, or van', -02* = Bus' 03 = 'Train or streetcar', 04" = Train or streetcar', 05* = Train or streetcar', *06* = Ferryboat', -07 = 'Other method', 08" = Other method', 09* = Bicycle', *10' = 'Walked 11 = Worked from home', 12 = Other method missing = "Does not commute to work ), number_in_carpool - as numerica JWRIP ) ) b. Using the same block of code, describe how the function rename () works. c. Describe the role that the pipe operator, %>%, plays in the same block of code. d. Inspect the data. How many variables are in the data? How many are numeric? How many are categorical? How many are indicators