Identify the element of plot occuring in these lines from Act III: MACBETH to LADY MACBETH

the time has been,

That, when the brains were out, the man would die,

And there an end; but now they rise again,

With twenty mortal murders on their crowns,

And push us from our stools: this is more strange

Than such a murder is

a Characterization
b Climax
c Exposition
d Rising Action