A point charge Q moves on the x-axis in the positive direction with a speed of 280 m/s. A point P is on the y-axis at y = +70 mm. The magnetic field produced at the point P, as the charge moves through the origin, is equal to -0.30 μT . What is the charge Q? (μ0 = 4π × 10-7 T ? m/A)

A) -53 μC

B) +53 μC

C) -39 μC

D) +39 μC

E) +26 μC