You have a fancy beach house in the east coast of Florida. The main wave source is to the northeast. ...

You have a fancy beach house in the east coast of Florida. The main wave source is to the northeast. Your neighbor to the south of you is having problems with beach erosion and storm waves often come under his house.
 
  So he decides to build a groin and he tells you it is for the benefit of the neighborhood. What should you respond to his comment?
  A) Don't worry, be happy, you're on the beach. It won't hurt anything.
  B) Ask for clarification of what type of material he will use, to make sure it is strong enough.
  C) Tell him no way. He is going to destroy the beach in front of your house. If he proceeds you might need to find a lawyer.
  D) Thanks buddy, I was thinking about doing that myself but you just saved me the money.