If the voltage of the source is 5 V and the resistances are given by $R_1 = 2 \Omega$, $R_2 =7 \Omega$, $R_6=\infty$, $R_4=4\Omega$, $R_7=R_5$, $R_3=0 \Omega$, and $R_7=\infty$, then which of the following answers is true?

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