The figure shows a circuit having esssight resistances of \( 1 \Omega \) each, labelled \( R_{1}...

The figure shows a circuit having esssight resistances of \( 1 \Omega \) each, labelled \( R_{1} \) to \( R_{8} \), and two ideal batteries with voltages \( \varepsilon_{1}=12 \mathrm{~V} \) and \( \varepsilon_{2}=6 \mathrm{~V} \).
Which of the following statements is(are) correct?
(a) The magnitude of current flowing through \( R_{1} \) is \( 7.2 \mathrm{~A} \)
(b) The magnitude of current flowing through \( R_{2} \) is \( 1.2 \mathrm{~A} \)
(c) The magnitude of current flowing through \( R_{3} \) is \( 4.8 \mathrm{~A} \)
(d) The magnitude of current flowing through \( R_{5} \) is \( 2.4 \mathrm{~A} \)