What Is the Approximate Total Uncertainty in the Velocity of an Electron

Multiple Choice

What is the approximate total uncertainty in the velocity of an electron (9.11 *10^-31 kg) confined within a gold atom whose diameter is about 270 pm? The uncertainty in the position of the electron is $\pm$ 5.0% of the atom's diameter.

A) ( $\pm$ 1.4 *10³ m/s)
B) ( $\pm$ 2.1 * 10⁵ m/s)
C) ( $\pm$ 3.7 * 10⁵ m/s)
D) ( $\pm$ 2.1 * 10⁶ m/s)
E) ( $\pm$ 4.3 * 10⁶ m/s)