Match the following list of animals with their level of organisation.
| Division of Labour | Animal |
| Column-1 | Column-2 |
| A. Orange level | i) Pheretima |
| B. Cellular aggregatelevel | ii) Fasciola |
| C. Tissue Level | iii) Spongilla |
| D. Organ System Level | iv) Obelia |
Choose the correct match showing the division of labour with animal example.
a. i-B, ii-C, iii-D, and iv-A
b. i-B, ii-D, iii-C, and iv-A
c. i-D, ii-A, iii-B, and iv-C
d. i-A, ii-D, iii-C, and iv-B