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Which of the following statements are correct?
(i) Detergents give foam easily even in hard water.
(ii) Anionic detergents are used in toothpastes.
(iii) Cationic detergents being inexpensive are extensively used as germicide.
(iv) Detergents with linear alkyl chains are more polluting as compared to detergents having branched alkyl chains.
Which of the following is the correct code for the statements above?
(a) TFTF
(b) TFFT
(c) FFFT

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