Read the excerpt below and answer the question. … The spirit that I have seen
May be the devil: and the devil hath power
To assume a pleasing shape; yea, and perhaps
Out of my weakness and my melancholy, …
[He] abuses me to dam(n) me… (Hamlet; Act II, scene ii)

What is the meaning of the word melancholy, as it is used above?
A: depression
B: ecstasy
C: greed
D: outrage