Which of the following scenarios would most likely be a periodic function? For that scenario, guess the period, amplitude, and frequency (rough guess, I don't expect you to magically know these things)
A) Modelling the weight of an elephant over time if the lifespan of an African elephant is 48 years and adult elephants reach 7 tons in weight.
B) Modelling the volume of gasoline in your car over the time we have been in school so far this year.
C) Modelling the level of plutonium-238 isotopes in spent nuclear fuel rods if the half-life of plutonium-238 is 87 years
D) Modelling the intensity of the sound coming from striking a gong over time if the gong has a diameter of 80 inches