The Stolen Book. Betty tells Susan that Bob stole her business law book from her car. The next day Susan confronts Bob and slaps him for stealing her book. Bob has Susan arrested for slapping him. Susan sues Bob for damages in the amount of the book and for maliciously having her arrested. Claiming that she lied, Bob sues Betty for defamation. The action Bob has against Betty for defamation involves which of the following?

A. Criminal law

B. Civil law

C. Insider law

D. Both criminal and civil law

E. Administrative law