. Mary sees 10 ravens and 5 blackbirds in a tree. Which of the following best compares the number of ravens and blackbirds in the tree?
A. The ratio of ravens to blackbirds in the tree is 3:2 because, of every 3 birds in the tree, 2 are not blackbird
B. The ratio of ravens to blackbirds in the tree is 1:2 because, for every raven in the tree, there are 2 blackbirds in the tree.
C. The ratio of ravens to blackbirds in the tree is 2:3 because 2 of every 3 birds in the tree are ravens.
D. The ratio of ravens to blackbirds in the tree is 2:1 because there are twice as many ravens as blackbirds in the tree.