If "No scientists are philosophers" is true, what may be inferred about the truth and falsity of the proposition?
1. No non-philosophers are scientists
2. No-non scientists are non-philosophers
3. No philosopher are non scientists
Out of these statements

A. All are true

B. All are false

C. Both 1 and 3 are false and 2 is undermined

D. Both 1 and 3 are true and 2 is false

Answer: Option C