Which of these exemplifies social steganography? A. Joining several social networks to increase social capital
B. Finding friends through existing friends on social networks
C. Using the status update to tell everyone what you are up to
D. Sending a hidden message to invite certain people to a party

Two students are discussing electricity that has a frequency of 60 hz. student a says that this type of electricity is referred to as ac. student b says that in this type of electricity, the electrons flow in only one direction. which of the following statements is correct? a. only student a is correct b. only student b is correct c. both of the two students are correct d. neither of the two students is correct