How does the speakers descent into madness affect the outcome of the poem 'The raven'?

AIt end with the raven flying away and a glimmer of hope.

Bit ends with the raven forever tormenting him as he is doomed to be sorrowful forever.

Cit ends with the prospect of lenore returning to him.

DIt ends with his madness leading to his death so that he can be with lenore.