Which quote about Candy's dog echoes the symbolism between his dog and Candy's own worsening situation?

a
"Why'n't you get Candy to shoot his old dog and give him one of the pups to raise up? I can smell that dog a mile away."
b
"'Carl's right, Candy. That dog ain't no good to himself. I wisht somebody'd shoot me if I got old an' a cripple.'"
c
"You wouldn't think it to look at him now, but he was the best damn sheep dog I ever seen."
d
"The dog struggled lamely to the side of the room and lay down, grunting softly to himself and licking his grizzled, moth-eaten coat."

b

"'Carl's right, Candy. That dog ain't no good to himself. I wisht somebody'd shoot me if I got old an' a cripple.'"