Answer:
Ironic-
"I will not impose upon your good nature."
"And I to your long life."
"You are a man to be missed."
"How long have you had that cough?"
Sincere-
"The vaults are insufferably damp."
"The Montresors,' I replied, 'were a great and numerous family.'"
Step-by-step explanation:
The definition of irony as a literary device is a situation in which there is a contrast between expectation and reality. For example, the difference between what something appears to mean versus its literal meaning.
Hope this helps.