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If |[ x^n ,x^(n+2) ,x^(2n)],[1 ,x^a , ...

If `|[ x^n ,x^(n+2) ,x^(2n)],[1 ,x^a , a ],[x^(n+5),x^(a+6),x^(2n+5)]|=0,AAx in R, where . n in N ,` then value of a is a. `n` b. `n-1` c. `n+1` d. none of these

A

n

B

n-1

C

n+1

D

None of these

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The correct Answer is:
C
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