If $a, b, c$ are distinct odd natural numbers, then the number of rational roots of the equation $a x^2+b x+c=0$

• Correct answer
  A

  must be 0
• B

  must be 1
• C

  must be 2
• D

  cannot be determined from the given data

Solution

Hint: $D=b^2-4 a c \geq 0$ for rational roots $D$ is perfect square

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