Mashaal Masha
The function $h$ is defined by $h(x)=a^{x}+b$, where $a$ and $b$ are positive constants. The graph of $h(x)$ in the $xy$-plane passes through the points $(0,10)$ and $(-2,\frac{325}{36})$. What is the value of $ab$?
Difficulty: Hard
A: 

$\frac{1}{4}$

B: 

$\frac{1}{2}$

C: 

$54$

D: 

$60$

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