$16$ Fires it Nable spun off the NOOK, its unprofitable e$-$reader. Shoppers couldn't get beyond identifying Barel Noble as a destination for books; however, most people are not buying hard copies of books and instead are using c$-$readers. The NOOK, though an e$-$reader, has different features from the Amazons Kindle. The Kindle is inexpensive, easy to use, and synes up easily with an Amazon digital account. This example shows that product failure results from all of thefollowing EXCEPTa, overestimation of market sizeb. incorrect positioningc. a low priced. an inferior product