Which of the following statements is true?
a.) symptoms of infection indicate that the body has been overtaken by invading microorganisms.
b.) symptoms of infection indicate that the body is trying to combat invading microorganisms.
c.) symptoms of infection indicate that the body has successfully defeated invading microorganisms.
d.) symptoms of infection indicate that the body is unprepared to combat invading microorganisms.

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.

when comparing the cases, what similarities are there in the cases that suggest one person committed these murders?