(1) \( r_{A}=2 r_{B} \) (2) \( r_{A}=3 r_{B} \) (3) \( r_{B}=2 r_{A} \) (4) \( r_{B}=3 r_{A} \)
(1) \( r_{A}=2 r_{B} \)
(2) \( r_{A}=3 r_{B} \)
(3) \( r_{B}=2 r_{A} \)
(4) \( r_{B}=3 r_{A} \)
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