Match the following columns.

Column $- I$	Column $- II$
$(a)$ Phytoplankton, grass	$(p)$ First trophic level
$(b)$ Man, Lion	$(q)$ Herbivore
$(c)$ Zooplankton, Cow, Grasshopper	$(r)$ Third trophic level
$(d)$ Birds, Wolf	$(s)$ Top carnivore

• A

  $a-p, b-q, c-r, d-s $

• B

  $a-s, b-r, c-q, d-p $

• C

  $a-p, b-r, c-q, d-s$

• D

  $a-p, b-s, c-q, d-r$