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X, Y, Z are three elements, which underg...

X, Y, Z are three elements, which undergo chemical changes according to the following equation:
`I: X_(2)O_(3)+2Y to Y_(2)O_(3)+2X`
`II:Y_(2)O_(3)+3Z to 3ZO+2Y`
The order of increasing reactivity is

A

`X lt Y lt Z`

B

`Y lt X lt Z`

C

`Z lt X lt Y`

D

`Z lt Y lt X`

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