Two infinitely long wires carrying current are as shown in the figure below. One wire is in the $y-z$ plane and parallel to the $y$-axis. The other wire is in the $x-y$ plane and parallel to the $x$-axis. Which components of the resulting magnetic field are non-zero at the origin?
- $x, y, z$ components
- $x, y$ components
- $y, z$ components
- $x, z$ components