contestada

passage: from "smoking spiritualized by Ralph Erskine in the fourth stanza, what does the author mean when he writes, "that to the dust/return thou must"?

And seest the ashes cast away;
Then to thyself thou mayest say
That to the dust
Return thou must.
Thus think, and smoke tobacco.

A) People rose from the dust.
B) Your possessions will turn to dust.
C) Everyone will die someday.
D) The tobacco ash will turn to dust.