A Long Straight Wire Carrying a 3

A long straight wire carrying a 3.0 A current enters a room through a window 1.5 m high and 1.0 m wide. The path integral around the window frame has the value (in T.m) :

A) 0.20
B) 2.5 * 10^-7
C) 3.0 * 10^-7
D) 3.8 * 10^-6
E) none of these