The circuit in Fig.1 is set up to investigate the action of the thermistor (TH3). The variable resistor (P) is adjusted until the voltmeter reads 0.00 V. The thermistor's calibration graph is as shown in Fig.1. Classify the following statements as true or false. - When the voltmeter reads zero, the variable resistor and the thermistor have equal resistances. - If the thermistor is warmed the voltage at point Y increases. - The voltage at X is 12 V