For the system of linear equations
$2x + 4y + 2az = b$
$x + 2y + 3z = 4$
$2x - 5y + 2z = 8$
which of the following is $NOT$ correct?

  • A
    It has infinitely many solutions if $a=3, b=6$
  • B
    It has unique solution if $a=b=6$
  • C
    It has unique solution if $a=b=8$
  • D
    It has infinitely many solution if $a=3, b=8$

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