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Identify the incorrect statement:

(1) In both male and female cockroach, 8th and 9th tergites are mostly covered by the 7th

(2) Ventrally, the abdomen in cockroach has only 9 sternites  in males and 7 in females

(3) In female cockroach, the 7th sternite along with 8th and 9th forms gynatrium

(4) the anterior most part of the gynatrium is called the oothecal chamber