input: Text: (D) Nine years ago Terrans came to Groac and attempted to take over the existing government, but failed. During the skirmish, a Terran cruiser disappeared. Retief wants to find out why the siege failed and what happened to the cruiser. THE MADMAN FROM EARTH BY KEITH LAUMER You don't have to be crazy to be an earth diplomat—but on Groac it sure helps! I "The Consul for the Terrestrial States," Retief said, "presents his compliments, et cetera, to the Ministry of Culture of the Groacian Autonomy, and with reference to the Ministry's invitation to attend a recital of interpretive grimacing, has the honor to express regret that he will be unable—" "You can't turn this invitation down," Administrative Assistant Meuhl said flatly. "I'll make that 'accepts with pleasure'." Retief exhaled a plume of cigar smoke. "Miss Meuhl," he said, "in the past couple of weeks I've sat through six light-concerts, four attempts at chamber music, and god knows how many assorted folk-art festivals. I've been tied up every off-duty hour since I got here—" "You can't offend the Groaci," Miss Meuhl said sharply. "Consul Whaffle would never have been so rude." "Whaffle left here three months ago," Retief said, "leaving me in charge." "Well," Miss Meuhl said, snapping off the dictyper. "I'm
  Question: What is the conspiracy Retief is trying to uncover?
  
   (A) Nine years ago Groacians invaded Earth and stole a Terran space cruiser. Retief wants to find out what happened to it.
   (B) Nine years ago, Consul Whaffle mysteriously disappeared from his government office. As the new consul, Retief feels it is his duty to find out what happened.  
   (C) Nine years ago, a Terran cruiser landed on Groac but soon mysteriously disappeared, along with its entire crew. Retief wants to find out what happened to the ship and its crew. 
  Answer:
output: Nine years ago, a Terran cruiser landed on Groac but soon mysteriously disappeared, along with its entire crew. Retief wants to find out what happened to the ship and its crew.