Two ecological pyramids (I and II) are shown. Mark the correct statement that describes them.

(a) I is a biomass pyramid while II is a number pyramid. 

(b) I is likely to represent rain forest while II represents desert ecosystem. 

(c) I is biomass pyramid of a grassland and II is number pyramid of oceanic ecosystem. 

(d) I is an energy pyramid of rain forest and Ii is biomass pyramid of host and parasite. 

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