Each of the marbles in a bag is either blue, red, or green, and there is at least one marble of each color in the bag. If the bag contains twice as many blue marbles as red marbles, then the number of red marbles in the bag divided by the total number of marbles in the bag is:

A) Less than \(\dfrac{1}{3}\)

B) Equal to \(\dfrac{1}{3}\)

C) Between \(\dfrac{1}{3}\) and \(\dfrac{1}{2}\)

D) Between \(\dfrac{1}{2}\) and \(\dfrac{2}{3}\)

E) Greater than \(\dfrac{2}{3}\)