Mashaal Masha
The equation $9x+5=a(x+b)$, where $a$ and $b$ are constants, has no solutions. Which of the following must be true?

I. $a=9$

II. $b=5$

III. $b\neq\frac{5}{9}$
Difficulty: Hard
A: 

None

B: 

I only

C: 

I and II only

D: 

I and III only

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