The location of the space organisation units have been marked in the given map as 1, 2, 3 and 4. Match these units with the list given below and select the correct answer using the codes given below the lists:
A. I.S.R.O B. I.I.R.S. C. N.R.S.A D. S.A.C.
Codes:
(a) A-4; B-1; C-2; D-3 (b) A-1; B-4; C-3; D-2
(c) A-1; B-4; C-3; D-2 (d) A-4; B-1; C-3; D-2