A project contains a form named AnalyzeSales that allows the user to open other forms within the project, including two forms named SalesByRegion and SalesByProduct. Both forms need to compute the average of the same set of sales data that is stored in a Text file.

Which approach makes future maintenance easier?

Question $14$ options:

a$)$

Create a Public method to compute the average, keep the method in one of the two forms and call it from the other form

b$)$

Create a method to compute the average, and keep a copy of it in each of the two forms.

c$)$

Create a Public method to computes the average, keep it in a separate class and call it from the two forms.

d$)$

All of the above

e$)$

None of the above