If $a, b, c, d$ are four distinct numbers chosen from the set $\{1,2,3, \ldots, 9\}$, then the minimum value of $\frac{a}{b}+\frac{c}{d}$ is
If $a, b, c, d$ are four distinct numbers chosen from the set $\{1,2,3, \ldots, 9\}$, then the minimum value of $\frac{a}{b}+\frac{c}{d}$ is
- [KVPY 2017]
- A
$\frac{3}{8}$
- B
$\frac{1}{3}$
- C
$\frac{13}{36}$
- D
$\frac{25}{72}$
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