What is the degree of the differential equation $\frac{d^3 y}{d x^3}+\left(\frac{d y}{d x}\right)^2-x^2\left(\frac{d^4 y}{d x^4}\right)=0$ ?

• Correct answer
  A

  1
• B

  2
• C

  3
• D

  4

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