T6B04 Which of these components is made of three layers of semiconductor material
{"Image DocumentName": "T6B04 Which of these components is made of three layers of semiconductor material?", "Image ImageDescription": "A. Alternator. B. Bipolar junction transistor. C. Triode. D. Pentagrid converter.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}