Which point on the number line represents Negative one-third?

A number line going from negative 2 to positive 1 in increments of 1. There are 3 equal spaces between each number. Point A is one mark to the left of negative 1. Point B is 1 mark to the right of negative 1. Point C is 2 marks to the right of negative 1. Point D is 1 mark to the right of 0.
A
B
C
D