COCKROACH

Following are some features of cockroach: I. Number of ovarioles in a female cockroach (Ov) II. The average number of oothecae produced by a female cockroach ( Ot) III. The number of times a nymph of cockroach undergoes moulting (M) IV. The number of gastric caecae present in cockroach (G) The correct arrangement of these in their increasing order is