2023 Gauss 8 Problem 8

In a salad dressing, the ratio of oil to vinegar is 3 : 1. To make the dressing more acidic, the amount of vinegar is doubled. What is the new ratio of oil to vinegar?

\textbf{(A)}\ 3 : 2\quad \textbf{(B)}\ 6 : 1\quad \textbf{(C)}\ 1 : 3\quad \textbf{(D)}\ 2 : 3\quad \textbf{(E)}\ 4 : 3

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.