题目内容

下列关于数据的说法正确的是（）

A. 数据是指对客观事件进行记录并可以鉴别的符号，它是对客观事物的性质、状态以及相互关系等进行记载的物理符号或这些物理符号的组合。它是可识别的、抽象的符号。
B. 数据可以是文字、数字或图像，是信息的载体和具体表现形式。它不仅指狭义上的数字，也指具有一定意义的文字、字母、数字符号的组合、图形、图像、视频、音频等，还可以指客观事物的属性、数量、位置及其相互关系的抽象表示。
C. 在计算机科学中，数据（data）是指所有能输入计算机并被计算机程序处理的符号的介质的总称，是用于输入电子计算机进行处理，具有一定意义的数字、字母、符号等的通称。
D. 在计算机系统中，数据是抽象的，而信息是具体的，信息必须通过数据来表征。

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