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# Which of the following statement about carbon fibres are correct ? 1. They can be made from viscose rayon 2. They can used for making more tips of missile. 3. They have low internal conductivity and used as insulators. 4. They are used for making compounds of bone plates.

$(a)\;1\;and\;2 \\ (b)\; 2\;and\;3 \\(c)\;1,2\;and\;4 \\ (d)\;1,2\;and\;3$