How does the meiosis in the lines "my lord is often thus, / And hath been from his youth” contribute to the uneasy mood?

a. It suggests that Lady Macbeth is in denial about her husband’s sudden deterioration.
b. It persuades the guests that Macbeth’s strange condition is not contagious or dangerous to others.
c. It emphasizes that Macbeth is unstable and that his wife would like help escaping the castle.
d. It suggests that Lady Macbeth would be a better ruler for Scotland and promotes dissent.

Macbeth. Which of you have done this?

Lords. What, my good lord?

Macbeth. Thou canst not say I did it: never shake
Thy gory locks at me.

Ross. Gentlemen, rise; his highness is not well.

Lady Macbeth. Sit, worthy friends: my lord is often thus,
And hath been from his youth: pray you, keep seat;
The fit is momentary; upon a thought
He will again be well. If much you note him
You shall offend him and extend his passion:
Feed and regard him not.