Which of the followings are correct about the words “Blue” and “uncertain stumbling Buzz” in the poem?

A、“Blue” is a visual imagery, and it implies the dying’s vision is becoming blurred.
B、“Blue” is a visual imagery, and it implies the friends and relatives’ great grief for the loss of their dear ones.

C、“Uncertain stumbling Buzz” is an auditory imagery, and it means the dying’s hearing is getting worse.
D、“Uncertain stumbling Buzz” is a kinesthetic imagery, and it means the dying’s hearing is getting worse.