If in a triangle, \( \left ( 1 - \frac{r_{1}}{r_{2}} \right ) \left ( 1 - \frac{r_{1}}{r_{3}} \right ) = 2 \) denote the radit of the escribed circles opposite to the angles A, B and C respectively), then the triangle is-

A right angled

B isosceles

C None of these