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Math·Advanced Math·Nonlinear functions

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The function $f$ models the resistivity of copper, in $\text{nanoohm}\cdot \text{meters}$, as a function of the temperature $x$, in kelvins, of the copper. The graph of $y=f(x)$ is shown. According to the model, which of the following statements about the estimated resistivity of copper is true?

A

It increases at a rate of $3$ $\text{nanoohm}\cdot \text{meters}$ per $100$ kelvins.

B

It increases at a rate of $6$ $\text{nanoohm}\cdot \text{meters}$ per $100$ kelvins.

C

At $100$ kelvins, it is $10$ $\text{nanoohm}\cdot \text{meters}$.

D

From $200$ kelvins to $400$ kelvins, it decreases $12$ $\text{nanoohm}\cdot \text{meters}$.