Which of the following statements are logically equivalent ?
(A) No metals are gases
(B) No gases are metals
(C) No metals are non-gases
(D) All metals are non-gases
Choose the correct answer from the options given below:
1
(A), (B) and (D) Only
2
(A), (B) and (C) Only
3
(B), (C) and (D) Only
4
(A) and (B) Only