Ellen: All three of Shirley's children have the measles!
Lois: As a matter of fact, all three of Shirley's children are fine!
Accepting the assumption that nobody who has measles is fine, which of the following must be true about this exchange?
A) It is possible that both Ellen and Lois are right about Shirley's children.
B) It is possible that both Ellen and Lois are mistaken about Shirley's children.
C) Either Ellen is right about Shirley's children, or Lois is right about them, but they cannot both be right.
D) Ellen and Lois might both be right about Shirley's children, and they might both be wrong about them.
E) None of these alternatives correctly identifies a possibility for this scenario.
please explain
I may be wrong . I understood like this.... please help me guys....
Anyone who has measles is fine i.e all are ok so Luis is right
Nobody who has measles is fine (opposite meaning) luis is wrong.
Here Ellen is right about information whereas Luis is not.
So I want to go for the answer C.