In the graph to the right:
Trial A (no immunity) is the _ line. Trial B (25% immune) is the _ line. Trial C (50% immune) is the _ line.
The trial in which the disease spread the least was Trial _.
In Trial C, of the 10 people who were not immune, _ people never got the disease.
![In the graph to the rightTrial A no immunity is the line Trial B 25 immune is the line Trial C 50 immune is the lineThe trial in which the disease spread the le class=](https://us-static.z-dn.net/files/d50/0455d9d31ad400c8a7b28f50397af863.png)