To Double the Total Energy of a Mass Oscillating at the End

To double the total energy of a mass oscillating at the end of a spring with amplitude A, we need to:

A) increase the angular frequency by $\sqrt{2}$ .
B) increase the amplitude by $\sqrt{2}$ .
C) increase the amplitude by 2.
D) increase the angular frequency by 2.
E) increase the amplitude by 4 and decrease the angular frequency by $\frac{1}{\sqrt{2}}$ .