Which answer choice is an example of verbal irony?
A. Damien's young sons excitedly explored the new playground, and he thought to himself, "The pure bliss of being a child."
B. The dentist smiled, and she tried to hide her disgust at his crooked, almost rotten teeth.
C. Leili looked out the window at the pouring rain and sighed, "What a gorgeous day."
D. The fire fighter fled as the voracious flames spread through the fire station.