Reverse saturation current of a common emitter transistor is __________

• A. Collector current when emitter is open circuited and base-collector junction is reverse biased
• B. Emitter current when collector is open circuited and base-collector junction is reverse biased
• C. Base current when emitter circuit is open circuited and emitter-collector junction is reverse biased
• D. Collector current when base circuit is open circuited