Match Column - I with Column - II.

Column -I    -     Column - II

(a) Nitrococcus  →(i) Denitrification

(b) Rhizobium → (ii) Conversion of ammonia to nitrite

(c) Thiobacillus → (iii) Conversion of nitrite to nitrate

(d) Nitrobacter → (iv) Conversion of atmospheric nitrogen to ammonia 

Choose the correct answer from options given below.

      (a) (b) (c) (d)

(1) (ii) (iv) (i) (iii)

(2) (i) (ii) (iii) (iv)

(3) (iii) (i) (iv) (ii)

(4) (iv) (iii) (ii) (i)