Which proportional relationship can be represented by this equation?



A.
The cost (c) is $18 to purchase 6 baseballs (b).
B.
There are 12 cups (c) of juice in every 4 bottles (b).
C.
There are 27 boaters (b) in 9 canoes (c).
D.
The librarian needs 44 books (b) for 14 children (c).