For a periodic signal () = 30 sin 1000 + 10 cos 3000 + 6 sin(5000 + 4), the fundamental frequency in rad/s is __________

For a periodic signal () = 30 sin 1000 + 10 cos 3000 + 6 sin(5000 + 4)

1.	For a periodic signal () = 30 sin 1000 + 10 cos 3000 + 6 sin(5000 + 4), the fundamental frequency in rad/s is __________
A.	1000
B.	3000
C.	5000
D.	15000
Answer» B. 3000