The theme of the poem “I Heard a Fly Buzz —When I Died” is the exploration of death. What kind of idea of death does the poet express in the poem?

A、Thepoetdefiestheseriousnessofdeath.
B、Thepoethasapeacefulattitudetowardsdeath.
C、Thepoetisskepticalandambivalentaboutthepossibilityofachievingimmortality.
D、Thepoetisafraidofdeath.