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IF |a|=8,|b|=3 and |a×b|=12, then the va...

IF `|a|=8,|b|=3 and |a×b|=12`, then the value of a.b is

A

6 or -6

B

`overline3 or -12 overline3`

C

8 or -8

D

None of these

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