APFIVE Parametric Second Derivative
If $$\displaystyle\frac{dx}{dt} = 2$$ and $$\displaystyle\frac{dy}{dt} = e^t$$, then $$\displaystyle\frac{d^2y}{dx^2}$$ is
A
$$\displaystyle\frac{e^t}{2}$$
B
$$e^t$$
C
$$\displaystyle\frac{e^t}{4}$$
D
$$\displaystyle\frac{2e^t}{3}$$
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