Table 181
Antibody Titer -In Table 18

Multiple Choice

Table 18.1
Antibody Titer
$$\begin{array} { | l | r | r | r | r | } \hline & \text { Day 1 } & { \text { Day 7 } } & \text { Day 14 } & \text { Day 21 } \\\hline \text { Patient A } & 0 & 0 & 256 & 512 \\\hline \text { Patient B } & 128 & 256 & 512 & 1024 \\\hline \text { Patient C } & 0 & 0 & 0 & 0 \\\hline \text { Patient D } & 128 & 128 & 128 & 128 \\\hline\end{array}$$
-In Table 18.1,what is the most likely and reasonable explanation for the results observed in Patient C?

A) The patient has advanced HIV/AIDS,with no ability to make an immune response.
B) The patient was not exposed to the pathogen and has not become infected,so no response is being produced over time.
C) The patient has significantly stronger innate immunity than adaptive immunity mechanisms.
D) The patient is producing a protective adaptive response that doesn't involve antibodies.