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. Proposition B. Statement C. Argument D. Explanation

A. Excellence of some members of a class B. Exclusion of some members of a class C. Exclusion of many members D. Inclusion of many members

A. Some scientists are not mathematicians B. No scientists are mathematicians C. All scientists are mathematicians D. None of the above

A. 1 and 3 B. 1 and 2 C. 2 and 3 D. 1 and 4