A wire of uniform cross section 'A', length '$l$' and resistance 'R' is bent into a complete circle. The equivalent resistance between any two diametrically opposite points will be:

$\frac{R}{4}$ $\frac{R}{8}$ $4 R$ $\frac{R}{2}$

$\frac{R}{4}$

The correct answer is Option (1) → $\frac{R}{4}$