Expert witness: Ten times, and in controlled circumstances, a single drop of the defendant' s blood was allowed to fall onto the fabric. And in all ten cases, the stained area was much less than the expected 9. 5 cm2. In fact, the stained area was always between 4. 5 and 4. 8 cm2. I conclude that a single drop of the defendant' s blood stains much less than 9. 5 cm2 of the fabric. Which one of the following, if true, most undermines the value of the evidence for the expert witness's conclusion?
A: Expert witnesses have sometimes been known to fudge their data to accord with the prosecution's case.
B: Not all expert witnesses are the authorities in their fields that they claim to be.
C: If similar results had been found after 100 test drops of the defendant's blood, the evidence would be even stronger.
D: In an eleventh test drop of the defendant's blood, the area stained was also less than 9. 5 cm2 -- this time staining 9. 3 cm2.
Choose A, B, C or D as your solution.
D