GAUSS8 2023 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?

Answer Choices
A. 3: 2
B. 6: 1
C. 1: 3
D. 2: 3
E. 4: 3