Kaplan and Norton introduced four different perspectives from which a company's activity can be evaluated. Which of the following is not one of the four perspectives?

Question $2$Select one:

a$.$

Financial perspective $($how do we perceive our shareholders?$)$

b$.$

Customer perspective $($how do we perceive our customers?$)$

c$.$

Process perspective $($in what processes should we excel to succeed?$)$

d$.$

Manufacturing innovation $($how will we sustain our ability to change and improve?$)$