Read the passage from act 2, scene 3 of The Tragedy of Macbeth.

[Porter.] Lechery, sir, it provokes, and unprovokes; it provokes the desire, but it takes away the performance. Therefore much drink may be said to be an equivocator with lechery; it makes him, and it mars him; it sets him on, and it takes him off; it persuades him, and disheartens him; makes him stand to, and not stand to; in conclusion, equivocates him in a sleep, and, giving him the lie, leaves him.

What is the effect of the antithesis in the porter’s speech?

It explains why some people use alcohol.
It contrasts the porter’s demeanor to that of other servants.
It describes the results of becoming intoxicated.
It compares the porter to the other revelers in Macbeth’s household.