" , " BITER ! ! ! " , and " GET HELP ! ! ! ! ! " I promise I will meditate more closely upon the causal relationship between going dumpster diving on Sunday afternoon and projectile vomiting Monday , and being brought to the Evil Place Where They Stick Things Up My Butt on Tuesday evening .

Question: What is the most likely reason that the writer get sick on Monday ?
Answer: None of the above choices .Their immune system was n't used to the germs from the dumpster .They were very careful with hygiene .They had n't taken part in any new activities lately .