Read the excerpt from mark twain's essay "the art of inhumation." about the same time, i encountered a man in the street, whom i had not seen for six or seven years; and something like this talk followed. i "but you used to look sad and oldish; you don't now. where did you got all this youth and bubbling cheerfulness? give me the address." he chuckled blithely, took off his shining tile, pointed to a notched pink circlet of paper pasted into its crown, with something lettered on it, and went on chuckling while i read, "j. b-, undertaker." then he clapped his hat on, gave it an irreverent tilt to leeward, and cried "that's what's the matter! it used to be rough times with me when you knew me--insurance-agency business, you know; mighty irregular. big fire, all right--brisk trade for ten days while people scared; after that, dull policy-business till next fire. town like this don't have fires often enough--a fellow strikes so many dull weeks in a row that he gets discouraged. but you bet you, this is the business! people don't wait for examples to die. no, sir, they drop off right ain't any dull spots in the undertaker line. i just started in with two or three little old coffins and a hired hearse, and now look at the thing! based on this excerpt, which best describes this type of nonfiction?
a)humorous essay
b) essay of ideas
c)autobiography
d)biography