macbeth. bring forth men-children only;
for thy undaunted mettle should compose
nothing but males. will it not be received,
when we have mark'd with blood those sleepy two
of his own chamber and used their very daggers,
that they have done't?

lady macbeth. who dares receive it other,
as we shall make our griefs and clamour roar
upon his death?

macbeth. i am settled, and bend up
each corporal agent to this terrible feat.
away, and mock the time with fairest show:
false face must hide what the false heart doth know.

william shakespeare, macbeth, act i, scene vii
based on this exchange between macbeth and lady macbeth, what can you infer about macbeth?
a. he has decided to kill the king.
b. he needs to get drunk before he can go through with it.
c. he needs more time to make up his mind.
d. he believes that lady macbeth has gone insane.