Electric Field due to an Infinite Line Charge

2019 1 question

1. 1 Electric Charges and Fields Medium
   Two parallel infinite line charges with linear charge densities $+\lambda\ C/m$ and $-\lambda\ C/m$ are placed at a distance of $2R$ in free space. What is the electric field mid-way between the two line charges?
   A zero B $\frac{2\lambda}{\pi\epsilon_0R}\ N/C$ C $\frac{\lambda}{\pi\epsilon_0R}\ N/C$ D $\frac{\lambda}{2\pi\epsilon_0R}\ N/C$
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