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

$$\frac{2\lambda}{\pi \epsilon_0R} N/C$$

B

$$\frac{\lambda}{\pi \epsilon_0R} N/C$$

C

$$\frac{\lambda}{2 \pi \epsilon_0R} N/C$$

D

zero