Why does brutus agree to allow marc antony speak at caesar's funeral?

a.
brutus wants the other conspirators to be shamed for what they have done.

b.
brutus wants the crowd to learn more about caesar's will.

c.
brutus thinks that antony, like himself, is honorable and honest.

d.
brutus thinks that antony, like himself, was one of the conspirators.

plz put the answer instead of the letter