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Different words are formed with the help...

Different words are formed with the help of letters of the word SIGNATURE. Find the number of words in which
vowels always occupy even places.

A

`""^(4) C_(4) xx 4! xx 5!`

B

`""^(5) C_(4) .(5!)^2`

C

`""^(6)C_(4) .(4 !)^2`

D

None of these

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The correct Answer is:
A
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