For a line of characteristic impedance $$Z_{o}$$ terminated in a load $$Z_{R}$$ such that $$Z_{R} > Z_{0}$$, the Voltage Standing Wave Ratio (VSWR)is given by

A

$$\frac{Z_{R}}{Z_{0}}$$

B

$$Z_{0}$$

C

$$Z_{R}$$

D

$$\frac{Z_{0}}{Z_{R}}$$