Let $a,\lambda ,\mu \in R.$ Consider the system of linear equations $ax+2y=\lambda$ and $3x-2y=\mu .$ Which of the following statement is INCORRECT?

• Correct answer
  A

  If $a=-3,$ then the system has infinitely many solutions for all values of $\lambda$ and $\mu$
• B

  If $a\ne -3,$ then the system has a unique solution for all values of $\lambda$ and $\mu$
• C

  If $\lambda +\mu =0,$ then the system has infinitely many solutions for $a=-3$
• D

  If $\lambda +\mu \ne 0,$ then the system has no solution for $a=-3$

Hence, the correct answer is option: 'A'.