Honestly I would choose A.
The poets description of trees, beetles,flowers, pastures, and a sunset affects the tone and conveys the central theme of the poem ''Elegy, written in a country churchyard'' by giving the poem a somber and almost reverently sorrowful tone, it goes with the theme of being written in a''country churchyard'' where there is the dead that has been buried and the feelings the poet must have felt while writing this of deep respect for the nature that surrounded him, tells us that the poet must have experienced loss. i hope this answer helped, although it is only an opinion, i reviewed the poem from ''Cliff notes'' have a great day!
