A segment `AB` of wire carrying current `I_1` is placed perpendicular to a long straight wire carrying current `I_2` as shown in figure. The magnitude of force experieced by the straight wire `AB` is
A. `(mu_0I_1I_2)/(2pi)ln 3`
B. `(mu_0I_1I_2)/(2pi) ln 2`
C. `(2mu_0I_1I_2)/(2pi)`
D. `(mu_0I_1I_2)/(2pi)`