A. Three files (filename.csv, filename_1.csv, filename_2.csv)
filename.csv (5 million profiles)
filename_1.csv (5 million profiles)
filename_2.csv (2 million profiles)
B. One file (filename.csv)
filename.csv (12 million profiles)
C. Two files (filename.csv, filename_1.csv)
filename.csv (6 million Profiles)
filename_1.csv (6 million Profiles)
D. Four files (filename.csv, filename_1.csv, filename_2.csv, filename_3.csv)