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In the reaction represented by, ""(Z)"...

In the reaction represented by,
`""_(Z)""^(A)Xto.""_(Z-2)""^(A-4)Yto.""_(Z-2)""^(A-4)Yto.""_(Z-1)""^(A-4)K`
the decays in the sequence are a)`alpha,beta,gamma` b)`beta,gamma,alpha` c)`gamma,alpha,beta` d)`alpha,gamma,beta`

A

`alpha,beta,gamma`

B

`gamma,alpha,beta`

C

`beta,gamma,beta`

D

`alpha,gamma,beta`

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The correct Answer is:
D
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