Which of the following indicates that a silicon NPN junction transistor is biased on?
A  Base-to-emitter voltage of approximately 0.6 to 0.7 volts
B  Base-to-emitter resistance of approximately 6 to 7 ohms
C  Base-to-emitter voltage of approximately 6 to 7 volts
D  Base-to-emitter resistance of approximately 0.6 to 0.7 ohms