The correct answer is B: Emitter, base, collector. A bipolar junction transistor (BJT) has three electrodes called the emitter, base, and collector. These three terminals correspond to the three regions of semiconductor material (NPN or PNP structure). The emitter emits charge carriers, the base controls current flow, and the collector collects the charge carriers. This is different from field-effect transistors (FETs), which have gate, drain, and source terminals. For amateur radio operators, understanding BJT terminal names is essential when reading schematics, troubleshooting amplifiers, and working with transistor circuits. The base-emitter junction controls current flow between emitter and collector, which is the fundamental operation of bipolar transistors.