QOf the following statements, there are two statements both of which cannot be true but both can be false. Which are these two statements?
(i) All machines make noise
(ii) Some machines are noisy
(iii) No machine makes noise
(iv) Some machines are not noisy

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• A (i) and (ii) ✔ ✖
• B (iii) and (iv) ✔ ✖
• C (i) and (iii) ✔ ✖
• D (ii) and (iv) ✔ ✖

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