Use R please

(a) Create a vector " v " containing elements in the order given: "Monday", "Wednesday" and "Friday". (b) Print the vector " v " and print what its type is. (c) Use the R help to learn about the substr function. Use it to obtain the first 3 letters of each element of the vector "v". Save it as a new vector "firstthree" and print "firstthree". (d) Finally, print the second element of the vector "firstthree