Answer:
It is B and C.
But what are these, really?
Cyber bullying is when you use your form of technology to harm another person. It can harm them mentally and sometimes is so bad that it can cause depression.
Hacking is to mess with a server which can cause complicated errors and even breakage of code.
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
I hope this answered your question! Have a wonderful day.