Each branch in the following circuit has a resistance \(R\).

The equivalent resistance of the circuit between points \(A\) and \(B\) is:
| 1. | \(R\) | 2. | \(2R\) |
| 3. | \(4R\) | 4. | \(8R\) |
| 1. | \(1~\Omega\) | 2. | \(2~\Omega\) |
| 3. | \(\dfrac{1}{2}~\Omega\) | 4. | \(\dfrac{1}{4}~\Omega\) |
| 1. | \(3\) | 2. | \(4\) |
| 3. | \(\dfrac13\) | 4. | \(1\) |