While teaching about transistors, mrs.. kwon shows a video of a hand pump being used to draw water from a well. she points out how the person primes the pump by pouring a smal amount of water into it before the water would start to flow. what does the water used to prime the pump represent? a. the current in the emitter that amplifies the signal b. the current in the base that amplifies the signal c. the current in the collector that turns the transistors on d. the current in the base that turns the transistors on