When making forecasts, adjusting one variable usually affects another variable$$s assumed value. Which of the following are possible common trade$-$offs that should be considered in making such forecasts?

I. Product volume and prices.

II$.$ Lower inventory and sales.

III. Entering new markets with margins and growth.

Question $8$ options:

d$)$ All of the above.

c$)$ II and III.

b$)$ I and III.

a$)$ I and II$.$