In a flowchart, what does a diamond that has more than two flow lines represent?

When you remove the background of a picture, the foreground portion is kept

Indicate whether the statement is true or false

Which of the following statements regarding stream-based and block ciphers are TRUE?

A. Stream-based ciphers use different keys for encryption and decryption. B. Stream-based ciphers are generally cheaper to implement than block ciphers C. Block ciphers are generally less susceptible to security issues. D. Block ciphers are generally used more in software implementations E. options a, b, and c only F. options b, c, and d only G. all of the options