Which of the following is an example of mobile code?

A.
Embedded code in control systems

B.
Code derived following the spiral model

C.
Embedded code in PCs

D.
Java and ActiveX code downloaded into a Web browser from the World Wide Web (WWW)

Explanation:
An example of mobile code is Java and ActiveX code downloaded into a Web browser from the
World Wide WeB. The other answers are incorrect because they are types of code that are not
related to mobile code.