Match Column-I (layers in the ionosphere for skywave propagation) with Column-II (their height range) :

The correct answer is :

Options

A. `{:(I , II , III , IV) , (a , b , c , d):}`
B. `{:(I , II , III , IV), (d , c , a , b):}`
C. `{:(I , II , III , IV), (d , c , b , a):}`
D. `{:(I , II , III , IV) , (c ,d , a , b):}`

Answer

C