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

B