The Jitterbug cell phone is excellent for seniors in particular. It is easy to set up and navigate. It is easy to read the letters and numbers on the screen. Another feature is that the minutes and data costs are reasonable, compared to other phones. While the Jitterbug is successful, other mobile telephones fail because . a. there is a poor match between product features and customer desires b. there is a good match between product features and customer desires c. there is correct customer targeting d. there is correct product positioning