Mashaal Masha
A salesperson's total earnings consist of a base salary of $\bm{x}$ dollars per year, plus commission earnings of 11% of the total sales the salesperson makes during the year. This year, the salesperson has a goal for the total earnings to be at least 3 times and at most 4 times the base salary. Which of the following inequalities represents all possible values of total sales $\bm{s}$, in dollars, the salesperson can make this year in order to meet that goal?
Difficulty: Hard
A: 

$2\bm{x} \leq s \leq 3\bm{x}$

B: 

$\frac{2}{0.11}\bm{x} \leq s \leq \frac{3}{0.11}\bm{x}$

C: 

$3\bm{x} \leq s \leq 4\bm{x}$

D: 

$\frac{3}{0.11}\bm{x} \leq s \leq \frac{4}{0.11}\bm{x}$

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