Question

Which of the following best illustrates the use of irony?
a.
"She wept at once, with sudden, wild abandonment, in her sister's arms."
b.
"She was young, with a fair, calm face, whose lines bespoke repression and even a certain strength."
c.
"And yet she had loved him--sometimes. Often she had not. What did it matter!"
d.
"When the doctors came they said she had died of heart disease--of joy that kills."