which of the following is a double jeopardy (1 point)

(a) being sued for causing jack smith's death after being found not guilty of jack smith's death.
(b) being tried for murder of jack smith after being found not guilty for murdering jack smith.
(c) being tried for the murder of jack smith after being found not guilty for the murder of joe smith
(d) being tried for the murder of jack smith after the first murder trial ended in a mistrial.

(a) being sued for causing Jack Smith's death after being found not guilty of Jack Smith's death.