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."