Answer:
I believe it is A: It is a question and not a debatable point. however, B is a close second.
Explanation:
B: the degree and levels of bullying are specific to a case-by-case basis. both are bad, however, some levels of physical bullying can be worse than other lower levels of cyber bullying; and vise versa.
A: the rules of a good thesis are:
It should be brief and informative.
It should present your arguments in a clear argument to state your opinion on the issue.
It must have a logical basis even if you are sharing your personal opinion.
this thesis fails to show your argument or state your opinion.