When a $0\mathrm{.}350-$kg package is attached to a vertical spring and lowered slowly, the spring stretches

$12\mathrm{.}0$ cm$.$ The package is now displaced from its equilibrium position and undergoes simple harmonic

oscillations when released. What is the period of the oscillations?

A$)0\mathrm{.}695$ s

B$)0\mathrm{.}483$ s

C$)0\mathrm{.}286$ s

D$)0\mathrm{.}0769$ s

E$)1\mathrm{.}44$ s