At Point $P$ The Magnetic Field Due to a Long Straight Wire Carrying

Multiple Choice

At point $P$ the magnetic field due to a long straight wire carrying a current of $2.0 \mathrm {~A}$ is $1.2 \mu \mathrm { T }$ . How far is $P$ from the wire? $\left( \mu _ { 0 } = 4 \pi \times 10 ^ { - 7 } \mathrm {~T} \cdot \mathrm { m } / \mathrm { A } \right)$

A) $22 \mathrm {~cm}$
B) $55 \mathrm {~cm}$
C) $33 \mathrm {~cm}$
D) $11 \mathrm {~cm}$
E) $44 \mathrm {~cm}$