If F1 and F2 are the lower and upper cutoff frequencies of a band pass signal, then what is the condition to be satisfied to call such a band pass signal as narrow band signal?

(F1-F2)> ( frac{F_1+F_2}{2} )(factor of 3 or less)

(F1-F2) ( frac{F_1+F_2}{2} )(factor of 10 or more)

(F1-F2)< ( frac{F_1+F_2}{2} )(factor of 3 or less)

(F1-F2) ( frac{F_1+F_2}{2} )(factor of 10 or more)

If F1 and F2 are the lower and upper cutoff frequencies of a band pass

1.	If F1 and F2 are the lower and upper cutoff frequencies of a band pass signal, then what is the condition to be satisfied to call such a band pass signal as narrow band signal?
A.	(F<sub>1</sub>-F<sub>2</sub>)> ( frac{F_1+F_2}{2} )(factor of 3 or less)
B.	(F<sub>1</sub>-F<sub>2</sub>) ( frac{F_1+F_2}{2} )(factor of 10 or more)
C.	(F<sub>1</sub>-F<sub>2</sub>)< ( frac{F_1+F_2}{2} )(factor of 3 or less)
D.	(F<sub>1</sub>-F<sub>2</sub>) ( frac{F_1+F_2}{2} )(factor of 10 or more)
Answer» E.