$\text{ Slope of normal to a curve }\mathrm{y}=\mathrm{f}\left(\mathrm{x}\right)\text{ at any point on curve is }\frac{x}{y}\text{ and curve is passing }$

$\text{ through the point }(1,1)\text{ . Then area formed by }\mathrm{y}=\mathrm{f}\left(\mathrm{x}\right),\mathrm{x}\text{ - axis }\mathrm{x}=3\text{ and }\mathrm{x}=5\text{ is }$

• A

  $\frac{5}{3}$

• B

  $\log \left(\frac{5}{3}\right)$

• C

  $\log 15$

• D

  $1$