An infinitely long thin straight wire has a uniform linear charge density of $\frac{1}{3} \text{ C m}^{-1}$. The magnitude of the force acting on a charge of $3 \mu\text{C}$ situated at a point $18 \text{ cm}$ away from the wire is:
$\left(\frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \text{ N m}^2 \text{ C}^{-2}\right)$

• A
  $2 \times 10^5 \text{ N}$
• B
  $10^5 \text{ N}$
• C
  $\frac{1}{3} \times 10^6 \text{ N}$
• D
  $3 \times 10^{11} \text{ N}$