Which translation of the passage best explains Macbeth's reasoning for not murdering Duncan?

A. People are happy to have Duncan remain as their king and will be
upset if he is murdered.
B. Duncan is a guest in my house and I should be protecting him not
harming him myself
C. People will automatically suspect that I am the murderer because
they know I want to be king
D. Duncan will be too easy to kill because he is so trusting and
believes everything people tell him

Which word best describes the author's tone in this excerpt from "that spot" by jack london? i don’t think much of stephen mackaye any more, though i used to swear by him. i know that in those days i loved him more than my own brother. if ever i meet stephen mackaye again, i shall not be responsible for my actions. it passes beyond me that a man with whom i shared food and blanket, and with whom i mushed over the chilcoot trail, should turn out the way he did. i always sized steve up as a square man, a kindly comrade, without an iota of anything vindictive or malicious in his nature. i shall never trust my judgment in men again. why, i nursed that man through typhoid fever; we starved together on the headwaters of the stewart; and he saved my life on the little salmon. and now, after the years we were together, all i can say of stephen mackaye is that he is the meanest man i ever knew. a. excited b. ironic c. indignant d. playful