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Which of the following analogies is corr...

Which of the following analogies is correct?
(a) `BF_3` : Linear :: `NH_3` : Pyramidal
(b) `NH_3` : Non-polar :: `CH_4` : Polar
(c) `O_2` : Paramagnetic :: `N_2` : Diamagnetic
(d) `H_2O` : `sp^3` hybridised :: `NH_3` : `sp^2` hybridised

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