Calculating Magnetic Field at Point P for Perpendicular Current-Carrying Wires

[Kartofen69420]

A wire coinciding with the X-axis carries a current I1 in the direction of increasing x. A second wire is parallel to the Z-axis at a distance R, and carries a current I2 in the downward direction as indicated in the figure. The magnetic field at point P (0, 0, R) is: (options and diagram in photo)

 

[Greg Bernhardt]

Please show the work on what you've tried so far.

 

[berkeman]

@Kartofen69420 -- Are you familiar with the "Right-Hand Rule" for the B-field generated by a current?