In a uniform plane wave 'E' and 'H' are related by

A. $$\frac{{\overrightarrow E }}{{\overrightarrow H }} = l$$

B. $$\frac{{\overrightarrow E }}{{\overrightarrow H }} = \frac{\varepsilon }{\mu }$$

C. $$\frac{{\overrightarrow E }}{{\overrightarrow H }} = \sqrt {\frac{\mu }{\varepsilon }} $$

D. $$\frac{{\overrightarrow E }}{{\overrightarrow H }} = \infty $$

Answer: Option C