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For a,b in ZZ and abs(a-b) le 10, let th...

For `a,b in ZZ and abs(a-b) le 10`, let the angle between the plane `P:ax+y-z=b` and the line `l:x-1=a-y=z+1` be `cos^(-1)(1/3)`.If the distance of the point `(6,-6,4)` from the plane P is `3sqrt6`, then `a^4+b^2` is equal to

A

25

B

48

C

85

D

32

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