There are 13 branches in a complicated network and nearly 8 nodes. How many equations are required to solve the circuit in node-voltage method?

(a) 7

(b) 13

(c) 5

(d) 6

This question was addressed to me in class test.

My enquiry is from The Node-Voltage Method and Dependent Sources and Some Special Cases topic in section Techniques of Circuit Analysis of Electric Circuits

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