The exam office of SSN wants to calculate the internal marks of the students. For a theory course, three assessments are conducted and the best of the three are averaged as the internal mark. The register numbers and names of the students are maintained in a CSV file. The marks for the three Continuous Assessment Tests (CAT) are also maintained as CSV files. The CSV file uses | as the separator. Develop a program using Pandas library to calculate the internal marks of the students for a course and display the marks using visualization.