2019 Gauss 8 Problem 8

The circumference of a circle is 100. The diameter of this circle is equal to

\textbf{(A)}\ 100 \times \pi\quad \textbf{(B)}\ \frac{2\pi}{100}\quad \textbf{(C)}\ \frac{100}{\pi}\quad \textbf{(D)}\ 2\pi \times 100\quad \textbf{(E)}\ \frac{\pi}{100}

If there are no answer choices shown, enter a numerical answer.

Full credit to this problem is given to the CEMC, you may view all Gauss contests here.