A notification circuit has a horn strobe 100 feet from the control panel, and another one 200 feet further away, each drawing 0.175 amps. Assuming a starting voltage of 20.4 volts DC and a wire resistance of 40 ohms per 1000 feet, what would be the voltage available at the second horn strobe?
A. 19.56 volts DC
B. 19.98 volts DC
C. 20.09 volts DC
D. 20.25 volts DC