请教一道填空题

larissa漂流瓶

Which of the  following best completes the passage below?

Sales campaigns aimed at the faltering personal computer market have strongly emphasized ease of use, called user-friendliness. This emphasis is oddly premature and irrelevant in the eyes of most potential buyers, who are trying to address the logically prior issue of wheter___

A. user-friendliness also implies that owners can service their own computers.
B. personal computers cost more the more user-friendly they are.
C. currently available models are user-friendly enough to suit them.
D. the people promoting personal computers use them in their own homes.
E. they have enough sensible uses for a personal computer to justify the expense of buying one.

请问这道题的解题思路是怎样的？谢谢！
答案：E

larissa漂流瓶

自己顶一下

larissa漂流瓶

请大侠给予指点。。。。。。