Your question is Determining Launch Quantity for Apple. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How do you determine the right launch quantity for a new Apple product?
Explain the assumptions, data, stakeholders, and trade-offs you would use. Describe how you would manage uncertainty, revise the forecast, and respond if demand or supply differs from plan.