Based on the data provided in part A of the passage, there are parasite load decreases followed by increases. Justify how trypanosome biology and features of the immune system could interact to result in this varying parasite load. A. As one glycoprotein variant becomes recognized and attacked by the adaptive immune system, another glycoprotein that is not yet recognized is able to persist. B. The longer the glycoprotein variants persist in the body, they attack and impair the immune system over time. C. As both glycoprotein variants become recognized by the innate immune system, the parasite load levels fall until the immune system can no longer detect the parasite, which allows the trypanosome to thrive. D. As antibody levels increase, the parasites with the associated glycoprotein variant are able to evade detection by the adaptive immune system.