What Is the Current Status of the Atkinson-Shiffrin Model of Memory

What is the current status of the Atkinson-Shiffrin model of memory?

A) Almost all of the recent research supports the model.
B) Only the concept of sensory memory is still of interest to researchers.
C) The theory has been completely abandoned, because there is no research support for the distinction between short-term memory and long-term memory.
D) Some studies support the distinction between short-term memory and long-term memory, but other studies suggest that these two forms of memory are actually similar