Question ID:PT38 S1 Q4 Passage:An anthropologist hypothesized that a certain medicinal powder contained a significant amount of the deadly toxin T. When the test she performed for the presence of toxin T was negative, the anthropologist did not report the results. A chemist who nevertheless learned about the test results charged the anthropologist with fraud. The anthropologist, however, countered that those results were invalid because the powder had inadvertently been tested in an acidic solution. Stem:Which one of the following, if true, most strengthens the anthropologist's counterargument? Correct Answer Choice:CChoice A:The anthropologist had evidence from field work that the medicinal powder was typically prepared using toxin T. Choice B:The activity level of toxin T tends to decline if the powder is stored for a long time. Choice C:When it is put into an acidic solution, toxin T becomes undetectable. Choice D:A fresh batch of powder for a repeat analysis was available at the time of the test. Choice E:The type of analysis used was insensitive to very small amounts of toxin T.