Which of the following is the best comment concerning Pam's action to recover damages from Dora?
Dora cannot be held liable simply upon proof that support was removed, but may be held liable if negligence is proved. 
Once land is improved with a building, the owner cannot invoke the common law right of lateral support. 
Dora's only obligation was to satisfy all local, state, and federal safety regulation
Dora is liable, because she removed necessary support for Pam's lot. 