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Let A, B, C and D be four non-empty sets...

Let A, B, C and D be four non-empty sets. The contrapositive statement of ''If `A sube B` and `B sube D`, then `A sube C`'' is :

A

If `AcancelsubeC` , then `AcancelsubeB` or `BcancelsubeD`

B

If `AcancelsubeC` , then `AcancelsubeB` and `BcancelsubeD`

C

If `AsubeC` , then `BsubA` or `D sub B`

D

If `AcancelsubeC`, then `AsubB` and `BsubeD`

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