Question

how do brutus and cassius respond to antony when he saw dead body of caesar

Answer 1

Upon hearing of Caesar's death, Antony requests to be allowed to speak to the conspirators so he might learn the reasons for the murder. Antony assures the conspirators that he does not doubt their wisdom and offers to shake hands with them, making it seem as if he is sympathetic toward their motivations for killing Caesar. More importantly, Antony asks for permission to speak at Caesar's funeral, and this request is the root of the disagreement between Brutus and Cassius.