Explain why Albert challenges the Count to a duel - why the Count mentions sacrifice - what this exposes about a main character

Albert is determined to seek out his father's enemy. He will demand a fight. First, he believes it to be Danglars, but when he visits Danglars, he realizes that it is his friend the Count of Monte Cristo who is to blame for his shame. Albert finally realizes that it is the Count who is responsible for his father's shame. He of course does not believe that his father is guilty of what has been brought against him, thus Albert's quest is now to avenge his family's honor. Albert feels justified to avenge his fsather but does not know the whole truth.