Three resistances \[4\,\Omega \] each of are connected in the form of an equilateral triangle. The effective resistance between two corners is [CBSE PMT 1993]

• A.                    \[8\,\Omega \]
• B.                                      \[12\,\Omega \]
• C.                    \[\frac{3}{8}\Omega \]    
• D.            \[\frac{8}{3}\Omega \]