“I should like to see those old temples and fakirs and jugglers,” said the old man [Mr. White]. “What was that you started telling me the other day about a monkey’s paw or something, Morris?”

“Nothing,” said the soldier hastily. “Leastways, nothing worth hearing.”

“Monkey’s paw?” said Mrs. White curiously.

“Well, it’s just a bit of what you might call magic, perhaps,” said the sergeant-major offhandedly.

How does the dialogue in this excerpt develop the plot?
A.
The mystery around the monkey’s paw is introduced.
B.
Sergeant-Major Morris’s dislike of Mr. White is revealed.
C.
Mr. White’s jealousy of Sergeant-Major Morris’s travels is revealed.
D.
The animosity between Mr. White and Sergeant Major Morris is revealed.