Which parts of this excerpt from edgar allan poe's "the cask of amontillado" use irony?
a"come," i said, with decision, "we will go back; your health is precious. you are rich, respected, admired, beloved; you are happy, as once i was. you are a man to be missed. for me it is no matter. we will go back; you will be ill, and i cannot be responsible. besides, there is luchresi–"
"enough," he said; "the cough's a mere nothing; it will not kill me. i shall not die of a cough."
"true–true," i replied; "and, indeed, i had no intention of alarming you unnecessarily–but you should use all proper caution . ."
a. "come," i said, with decision, "we will go back
b. you are rich, respected, admired, beloved; you are happy, as once i was.
c. we will go back; you will be ill
d. "the cough's a mere nothing; it will not kill me. i shall not die of a cough."
e. "true–true," i replied; "and, indeed, i had no intention of alarming you unnecessarily