Match List - I with List-II and select the correct answer from the codes given below the lists:

List - I (Compound)
A. Urea
B. Hydrous copper sulphate
C. Lead sulphide
D. Potassium permanganate

List – II(Colour)
1. Blue
2. White
3. Pinkish purple
4. Black

a. A-2, B-1, C-4, D-3
b. A-2, B-4, C-1, D-3
c. A-3, B-4, C-1, D-2
d. A-3, B-1, C-4, D-2