Clearly option A and B, are out since

In statement 1, we have no information of total volume of the cardboard carton.

In statement 2, we have no information of total volume of the cereal boxes.

Even on combining both the statement, we cannot clearly say how many cereal boxes can be shipped because boxes ,

with

length 6,breadth 5 and height 4 is different

when compared to boxes,

with

length 8,breadth 5 and height 3(with same volume = 120) fit differently in the cardboard carton of

length 20,breadth 10 and height 12(with volume, 2400)Hence, insufficient.(Option E)

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