[SOLVED] the power supplied to the circuit

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Please note that the category Electronic Elementary Questions is dedicated for homework help.

Start with finding the node voltages caused by the two sources.
 
1W, 12W by voltage source and current source respectively.
 

1W, 12W by voltage source and current source respectively.
You're adding a new erroneous solution to the multiple-choice problem. You can be sure, that one of the four choices is correct!
 

correction: the answer is -3W, 16W by the voltage source and the current source respectively.
 
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