Consider the following statements regarding phase sensitive detector 1. The detector reads zero when phases of input signal and reference signal are different.2. The detector acts as a linear rectifier.3. The detector can be used as vector voltmeter. Of the above statements which are correct?

Consider the following statements regarding phase sensitive detector 1

1.	Consider the following statements regarding phase sensitive detector 1. The detector reads zero when phases of input signal and reference signal are different.2. The detector acts as a linear rectifier.3. The detector can be used as vector voltmeter. Of the above statements which are correct?
A.	1, 2, 3
B.	1 and 2
C.	2 and 3
D.	1 and 3
Answer» D. 1 and 3