Rules of inference are
1. applied when the main operators are in use.
2. nine in number.
3. applied only to entire statements.
4. not applied to entire statements.
Select the correct answer:

A. Synthetic Logic B. Statement Logic C. Analytical Logic D. Ethical Logic

A. The value of formulas B. The construction of formulas C. The term of formulas D. The concept of formulas

A. 1, 2 and 3 B. 2, 3 and 4 C. 1, 3 and 4 D. All of these

A. Classical inductive logic B. Classical deductive logic C. Classical ethics D. Western ethics