Points A, B, and C lie in a plane perpendicular to an infinitely long, straight wire carrying current I out of the page. Point A is 1 cm from the wire, point B is 2 cm away, and point C is 3 cm away. Which ranking correctly orders the magnitudes of the magnetic field at the three points?
a) BA=BB=BC
b) BC>BB>BA
c) BA>BB>BC
d) BA>BC>BB