Use the Following Figure to Answer the Next Problem

Multiple Choice

Use the following figure to answer the next problem:
-A disk of radius 10 cm has a uniform charge density of 20 nC/cm².A small particle of mass m = 10 mg and charge q₀ = 5 nC is placed at x = 20 cm and released.The speed of the particle when it is a great distance from the disk is

A) 14.2 cm/s
B) 22.5 cm/s
C) 42.9 cm/s
D) 51.8 cm/s
E) 66.1 cm/s