What is the main difference between Apple and Dell's production strategies?

What is the main difference between Apple and Dell's production strategies?

Apple uses a make$-$to$-$stock strategy, while Dell uses a make$-$to$-$order strategy

Apple uses a push production strategy, while Dell uses a pull production strategy

Apple uses a just$-$in$-$time strategy, while Dell uses a lean manufacturing strategy

Apple uses a make$-$to$-$order strategy, while Dell uses a make$-$to$-$stock strategy