The average level of fat in the blood of people suffering from acute cases of disease W is lower than the average level for the population as a whole. Nevertheless, most doctors believe that reducing blood-fat levels is an effective way of preventing acute W. Which one of the following, if true, does most to justify this apparently paradoxical belief?
A: The progression from latent to acute W can occur only when the agent that causes acute W absorbs large quantities of fat from the patient's blood.
B: Several of the symptoms characteristic of acute W have been produced in laboratory animals fed large doses of a synthetic fat substitute, though acute W itself has not been produced in this way.
C: High levels of fat in the blood are indicative of several diseases that are just as serious as W.
D: The blood level of fat for patients who have been cured of W is on average the same as that for the population at large.
Choose A, B, C or D as your solution.
A