In a collection of red, blue, and green marbles, there are 25% more red marbles than blue marbles, and there are 60% more green marbles than red marbles. Suppose that there are r red marbles. What is the total number of marbles in that collection?
<spanclass=′latex−bold′>(A)</span>2.85r<spanclass=′latex−bold′>(B)</span>3r<spanclass=′latex−bold′>(C)</span>3.4r<spanclass=′latex−bold′>(D)</span>3.85r<spanclass=′latex−bold′>(E)</span>4.25r