Find electric field at point $(a,a,a)$ due to three infinitely long lines of charge density $\lambda$ along $x,y$ and $z$ axis

Question

$(A)\; \frac{\lambda} {3 \pi \in _0 a} (\hat i +\hat j + \hat k) \\ (B)\;\frac{\lambda} {2 \sqrt 2 \pi \in _0 a} (\hat i +\hat j + \hat k) \\ (C)\; \frac{\lambda} {2 \pi \in _0 a} (\hat i +\hat j + \hat k) \\ (D)\;\frac{\sqrt 2\lambda} { \pi \in _0 a} (\hat i +\hat j + \hat k)$