$EXP_{Erratic}(L)$ that an Erratic Pokemon needs to reach L is given in the table below.

Pokemon is a video game owned by Nintendo, in which you train a “Pocket Monster” who levels up when it has gained enough experience points from defeating the enemies. The amount of experience$\begin{array} {| l | l || l | l |} \hline \text{Level} & \text{EXP} & Level & EXP \\ \hline 1 & 2 & 11 & 2369\\ 2 & 16 & 12 & 3041\\ 3 & 52 & 13 & 3823\\ 4 & 123 & 14 & 4720\\ 5 & 238 & 15 & 5738\\ 6 & 406 & 16 & 6881\\ 7 & 638 & 17 & 8156\\ 8 & 942 & 18 & 9564 \\ 9 & 1327 & 19 & 11112\\ 10 & 1800 & 20 & 12800\\ \hline \end{array}$

Which of the following functions is the **best approximation** of $EXP_{Erratic} (L)$ in the range $1 \leq L \leq 20$?

**Details and assumptions**

If you are interested in Pokemon levels, you might want to look at: The math behind Pokemon levels