Answer:
Option B.
Explanation:
Given information:
Net income = $3,000
Net sales = $10,000
Profit margin formula:
[tex]\text{Profit margin}=\dfrac{\text{Net income}}{\text{Net sales}}\times 100[/tex]
Substitute given values in the above formula.
[tex]\text{Profit margin}=\dfrac{3000}{10000}\times 100[/tex]
[tex]\text{Profit margin}=30[/tex]
The profit margin is 30%. Therefore, the correct option is B.