Which Equation Does the Function $y = e ^ { - 3 t }$

Multiple Choice

Which equation does the function $y = e ^ { - 3 t }$ satisfy? Select the correct answer.

A) $y ^ { tt } + y ^ {t } + 12 y = 0$
B) $y ^ {tt} - 3 y ^ { t } + 12 y = 0$
C) $y ^ { tt } - y ^ { t } + 12 y = 0$
D) $y ^ { tt } + y ^ { t } - 12 y = 0$
E) $y ^ { tt } - y ^ { t } - 12 y = 0$