A Point Charge Q Moves on the X-Axis in the Positive

Multiple Choice

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 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