There are two columns, Column-A and Column-B :

Column – A

(a) Canopy

(b) Decomposers

(c) Humus

(d) Porcupine

Column – B

(i) Dead plant and Animal tissues

(ii) A wild animal

(iii) Microorganism

(iv) Branches of tall tree

Which one of the following is the correct sequence of Column-B for the given sequence of Column-A?