Signal x(t) = 5 (1 + 2 cos 2000 t) can be recovered by (i) envelop detector (ii) synchronous detector (iii) square law

Signal x(t) = 5 (1 + 2 cos 2000 t) can be recovered by (i) envelop de

1.	Signal x(t) = 5 (1 + 2 cos 2000 t) can be recovered by (i) envelop detector (ii) synchronous detector (iii) square law
A.	(i) and (ii) only.
B.	(i) and (iii) only.
C.	(ii) and (iii) only.
D.	All.
Answer» D. All.