The order and degree of the differential equation \( \left[1+\left(\frac{d y}{d x}\right)^{2}+\sin \left(\frac{d y}{d x}\right)\right]^{\frac{3}{4}}=\frac{d^{2} y}{d x^{2}} \)

• A

  order \( =2 \), degree \( =3 \)
• B

  order \( =2 \), degree \( =4 \)
• C

  order \( =2 \), degree \( =\frac{3}{4} \)
• Correct answer
  D

  order \( =2 \), degree \( = \) not defined

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