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If A =[(1,a,a),(0,1,b),(0,0,1)] and A^n=...

If `A =[(1,a,a),(0,1,b),(0,0,1)] and A^n=[(1,48,2064),(0,1,96),(0,0,1)]` then `n+a+b` is equal to

A

24

B

25

C

26

D

2736

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