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Solution
The correct option is C a-9th sternum, b-anal circus, c-10th tergum, d-anal style
Male cockroach has the anal style in the 9th sternum which is absent in females. But both male and female have jointed filamentous structure called anal cerci in the 10th tergum.
So the correct option is 'a-9th sternum, b-anal circus, c-10th tergum, d-anal style'.