Read the following excerpt from "The Celebrated Jumping Frog of Calaveras County." Thish-yer Smiley had a mare--the boys called her the fifteen-minute nag, but that was only in fun, you know, because, of course, she was faster than that--and he used to win money on that horse, for all she was so slow and always had the asthma, or the distemper, or the consumption, or something of that kind. They used to give her two or three hundred yards start, and then pass her under way; … What type of irony is demonstrated in this excerpt?

verbal irony
dramatic irony
situational irony
none of the above