Match the list –I (Phenomenon associated with electromagnetic radiation) with List –II (Part of electromagnetic spectrum) and select the correct code from the choices given below

List I
I. Doublet of sodium
II. Wavelength corresponding to temperature associated with the microwave
III. Wavelength emitted by atomic hydrogen in interstellar space
IV. Wavelength of radiation arising from two close energy levels in hydrogen

List II
A. Visible Radiation
B. Isotropic radiation filling all space
C. Short Radio Wave
D. X-rays


(a) (I)-(A), (II)-(B), (III)-(B), (IV)-(C)
(b) (I)-(D), (II)-(C), (III)-(A), (IV)-(B)
(c) (I)-(B), (II)-(A), (III)-(D), (IV)-(A)
(d) (I)-(A), (II)-(B), (III)-(C), (IV)-(D)