Which sequence of steps do you follow when working with files locally in Git in SAP Business Application Studio?

Which sequence of steps do you follow when working with files locally in Git in SAP Business Application Studio?
A . Stage
Create, modify, save
Commit
Check out
B . Stage
Create, modify, save
Check out
Commit
Check out
Create, modify, save
C . Stage Commit
Create, modify, save
D . Stage
Check out
Commit