11 Data pre-processing includes several tasks. Given the two Tables below, which one of the data pre-processing tasks was performed. (2 points) RollNo Name Mobile Number T4 Tutorials1 Sameed +92 302 XX XXX XX T4 Tutorials1 Ali +92 333 XX XXX XX Mobile Network Mobilink Ufone Table 1 Before Pre-Processing Roll No T4 Tutorials TATutorials Name Mobile Number Sameed +92 302 XX XXX XX Ali +92 333 XX XXX XX Table 2 After Pre-Processing Duta tinning Osta normation