A temperature instrumentation system for an engine room console consists of a resistance temperature detector (RTD), a measuring bridge circuit, and a meter (or alarm circuit).Which of the following statements is true concerning the measuring bridge circu A. The input voltage varies in a linear fashion with temperature. B. The voltage across the center of the resistance bridge is always constant. C. The resistance bridge is said to be balanced when its output voltage is zero. D. The input voltage of the resistance bridge is the constant temperature signal.