Miller Company sells several products. Sales reports show that the sales volume of its most popular product has increased the past three quarters while overall profits have decreased. How might production cost reports assist management in making decisions about this product?

(Coming from a non-expert) Miller Company shouldn't only rely on this product and should periodically develop products that compete with their best-selling product evaluating their effectiveness on doing so. This is one of the many approaches the trillion company (Apple) has used throughout the years (making an Apple Watch so you don't have to use your iPhone as often, improving the size and battery of the iPhone so you won't need to use your iPad, improving the processing power of iPads so you won't have to carry your MacBook everywhere and so on).