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In a factory control room, there are three ON-OFF switches on the central control panel, labeled A, B and C. They are changed from default setting to a required setting based on the following rules:
In case only switch A is ON in the default setting, then turn switch B ON.
In case switches A and B are the only switches ON in the default setting, then turn switch C ON. In case all the three switches are ON, in default setting, then turn the switch C OFF. For any other default setting, turn ON all switches that are OFF and turn OFF all switches, if any, that are ON.
In case, only switch B is ON in the second setting. Which of the following could have been the default setting?
AA ON, B ON, C ON.
BA ON, B OFF, C ON.
CA OFF, B ON, C OFF.
DA OFF, B OFF, C ON.
EA OFF, B OFF, C OFF
Answer: Option B
Explanation:A ON, B OFF, C ON
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