Assume the Heisenberg Uncertainty Principle Can Take the Form $\Delta$ E $\Delta$

Multiple Choice

Assume the Heisenberg uncertainty principle can take the form $\Delta$ E $\Delta$ t $\ge$ h/4.How accurate can the position of an electron be made if its speed is 5* 106 m/s and if the uncertainty in its energy is 10 eV?

A) 7.7 *10^-18 m
B) 1.3 * 10^-23 m
C) 6.2 * 10^-15 m
D) 1.6 * 10^-10 m
E) 1.2 * 10^-9 m