A company wants to automatically decrease the price of a smartphone product within specified time...

To automatically adjust the price of a smartphone product within specified time frames, the appropriate setup involves: D. Multiple price lists with affectivity time frames: By configuring multiple price lists that have defined effective dates, the system can automatically apply different pricing for the smartphone as time progresses. This method leverages the system's capability to switch between price lists based on their affectivity, allowing for seamless price adjustments according to pre-set schedules.