Which of the Following Will Destroy a Marital Privilege Where

Which of the following will destroy a marital privilege where communication is made in confidence?

A) Where a husband and wife speak privately in their bedroom and there is an unsuspecting third party outside the window.
B) Where a husband and wife speak privately in their bedroom and a third party gains access to their conversation by electronic means.
C) Where a husband and wife speak loudly but privately in their bedroom and a guest in the next room overhears the conversation.
D) Where communication is intercepted due to the betrayal or connivance of one spouse.