Following are various layers in the atmosphere used for communications :(a) F2 Layer(b) D layer(c) F1 Layer(d) E LayerArrange these in terms of descending order of their height from earth.The correct sequence is:

Following are various layers in the atmosphere used for communications

1.	Following are various layers in the atmosphere used for communications :(a) F2 Layer(b) D layer(c) F1 Layer(d) E LayerArrange these in terms of descending order of their height from earth.The correct sequence is:
A.	(a), (c), (d), (b)
B.	(b), (c), (d), (a)
C.	(a), (b), (d), (c)
D.	(c), (b), (a), (d)
Answer» B. (b), (c), (d), (a)