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Select the correct statement from the ones given below w.r.t. Periplaneta americana.

A

Malpighian tubules present at the junction of gizzard and mesenteron help in removal of excretory waste from haemolymph

B

About 12 alary muscles cause rhythmic contraction of heart

C

Spermathecae in males are site for storage of sperm

D

Nervous system consists of a scene of fused segmentally arranged ganglia joined by paired longitudinal connectives on ventral side of body

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