题目内容：
Which of the following statements is not true?
A．Since the computer revolution, the expression "state of the art" has become popular. B．"State of the art" means something that is the best one can buy.
C．With the rapid development of computer," state of the art" computer may easily become out of date.
D．All kinds of products are "state of the art" nowadays.
参考答案：
答案解析：