In the smart ultrasonic water meter, the main function of the water temperature sensor is ()?

In the smart ultrasonic water meter, the main function of the water temperature sensor is ()?
A . True the error caused by the influence of temperature in the ultrasonic measurement and improve the accuracy
B . Prevent the water meter from being too low to cause the water meter to rupture
C . Prevent the water meter from being used as a hot water meter
D . All of the above

Answer: A