The Major Difference Between the Original Idea of Short-Term Memory

The major difference between the original idea of Short-Term Memory and the newer concept of 'working memory' is

A) the original idea of STM was primarily template-based image processing.
B) the newer idea of working memory includes a visual-spatial sketchpad, and a central executive in addition to the phonological rehearsal loop.
C) the newer idea of working memory states that ideas that do not work very well are unlikely to be remembered.
D) working memory denies the distinction between Short-Term Memory and Long-term Memory.