In what way could Java applets pose a security threat?

A. Their transport can interrupt the secure distribution of World Wide Web pages over the Internet by removing SSL and SHTTP
B. Java interpreters do not provide the ability to limit system access that an applet could have on a client system.
C. Executables from the Internet may attempt an intentional attack when they are downloaded on a client system.
D. Java does not check the bytecode at runtime or provide other safety mechanisms for program isolation from the client system.