For the following data, develop a Pareto analysis. The letters

For the following data, develop a Pareto analysis. The letters A, B, C, and D are problems that occur in a process. Which cause should you focus on first?
BB
AC
BA
BA
BA
BC
BA
DC
BB
AA
AB
BB
DB
CE
AF
BE
CA
DB
AA
AB
AB
BB
CB
BB
CA
AB
BD
AC
CB
AE