Which of the following skills are considered key characteristics of a commercial mindset?

I. Using time productively

II$.$ Staying on top of tasks

III. Creating and adhering to a plan

IV$.$ Maintaining a positive attitude

A$)$ Statements I, II$,$ and III

B$)$ Statements I, III, and IV

C$)$ Statements II$,$ III, and IV

D$)$ All statements are correct