The equation of the chord, of the ellipse $\frac{ x ^2}{25}+\frac{ y ^2}{16}=1$, whose mid-point is $(3,1)$ is :
- [JEE MAIN 2025]
- A$48 x+25 y=169$
- B$4 x+122 y=134$
- C$25 x+101 y=176$
- D$5 x+16 y=31$
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- [JEE MAIN 2025]
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- [JEE MAIN 2023]
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