The statistical thinking underlying Six Sigma is based on which of the following three principles?

Question $2$Select one:

a$.$

All activities can be controlled, employee empowerment is the best control tool, and $100$ percent control is possible.

b$.$

All work is a process, all processes have variability, and all processes create data that explains variability.

c$.$

All work activities can be done accurately most of the time, empowered employees are necessary for effective control, and good statistical data is an empowered employee's best control tool.

d$.$

All work is a statistically controllable process, $100$percent control is possible, and every well$-$controlled process is defect$-$free.

e$.$

Most business processes are subject to control, Six Sigma can totally remove variability in how processes are performed, and most defects can be eliminated.