A material is described by the following electrical parameters at a frequency of 10 GHz σ = 10⁶ mho/m, µ = µ₀ and ∈/∈₀ = 10. The martial at this frequency is considered to be
$$\left( {{ \in _0} = \frac{1}{{36\pi }} \times {{10}^{ - 9}}{\text{F/m}}} \right)$$

A. a good conductor

B. a good dielectric

C. neither a good conductor, nor a good dielectric

D. a good magnetic material

Answer: Option A