Characteristic impedance of a two-wire transmission line at 1OKHz is 200-j50 ohms. Line is terminated in its characteristic impedance, and a 28.28V p-p signal is measured at its input. Determine the real power supplied by the signal source to the line?

A

0.5 W

B

0.485 W

C

0.47 W

D

0.25 W