2017 Gauss 8 Problem 3

A pentagon is divided into 5 equal sections, as shown. An arrow is attached to the centre of the pentagon. The arrow is spun once. What is the probability that the arrow stops in the section numbered 4?

\textbf{(A)}\ \frac{3}{5}\quad \textbf{(B)}\ \frac{1}{2}\quad \textbf{(C)}\ \frac{4}{5}\quad \textbf{(D)}\ \frac{1}{4}\quad \textbf{(E)}\ \frac{1}{5}

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.