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Which of the following is amphoteric oxi...

Which of the following is amphoteric oxide?
`Mn_(2)O_(7),CrO_(3),Cr_(2)O_(3),CrO,V_(2)O_(5),V_(2)O_(4)`

A

`V_(2)O_(5),Cr_(2)O_(3)`

B

`Mn_(2)O_(7),CrO_(3)`

C

`CrO,V_(2)O_(5)`

D

`V_(2)O_(5),V_(2)O_(4)`

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A
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