I’m the poem”The Cask of Amontillado”

Which sentence from the text most strongly supports the answer to the previous question?

A. "Luchesi cannot tell Amontillado from Sherry."
B. "The cold is merely nothing."
C. "Nitre?" he asked, at length."
D. "You do not comprehend?' he said."

The previous question was

Which inference about Fortunato is most strongly supported by the text

A. He is temperate
B. He is anxious
C. He is arrogant
D. He is suspicious

(I picked C on this)( I need help with the one above this is here for reference)