by using R solve the following question The files test1.dat and test2.dat contain the result of the first and second exams for a group of students. The files contain the student ID, family name, the name and the test score. a. Write a code for reading each of the files. p. Write a code to merge these two files by ID and keep the ID, family name, name, score test1 and Score test2. c. Write a code that create a data containing only the last 8 digits of the ID, the score in test1 and the Score in test2.

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