The differential equation whose solution is $\mathrm{A} x^2+\mathrm{B} y^2=1$, where A and B are arbitrary constants is of
- Adegree 1 and order 2
- Bdegree 2 and order 1
- Cdegree 3 and order 2
- Ddegree 1 and order 3
✓ Correct answer: A
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