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Using the circuit given below, state whi...

Using the circuit given below, state which of the following statemet is correct?

(a) When `S_(1)` and `S_(2)` are closed, lamps A and B are lit.
(b) With `S_(1)` open and `S_(2)` closed, A is lit and B is not lit.
(c) With `S_(2)` open and `S_(1)` closed A and B are lit.
(d) With `S_(1)` closed and `S_(2)` open, lamp A remains lit even if lamp B gets fused.

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